coupler是什么意思翻译

更新时间:2026-08-13 21:26:57   栏目: 英语词典

coupler

读音:['kʌplə]

n.连接者,耦合器

例句与用法:

The strike, coupled with the floods, was expected to reduce supplies of food drastically.

这场罢工,再加上洪水泛滥可能会使食品的供应量大幅度下降。

The bad light, coupled with (ie together with) the wet ground, made play very difficult.

光线不足兼之地面潮湿,比赛难以进行。

Her name was coupled with his.

她的名字与他的连在一起。

The name of Mozart is coupled with the city of Salzburg.

莫扎特的名字是与萨尔茨堡城联系在一起的。

词形变化:

动词过去式: coupled | 动词过去分词: coupled | 动词现在分词: coupling | 动词第三人称单数: couples |

n.

1. 连结者; 配合者

2. 联结器

coupler

词形变化:

动词过去式: coupled | 动词过去分词: coupled | 动词现在分词: coupling | 动词第三人称单数: couples |

同义词:

pair | join | team | link | mate | combine | twin | unite | bracket | intertwine | conjoin | accompany | marry | duo | twosome | connect | fasten | match | duet | copulate | distich | couple on | yoke | duad | mates | pair off | couplet | twain | brace | couple up | dyad | span | attach | relate | associate |

反义词:

uncouple |

词义辨析:

同义参见:

connection  joint   couplercouplerD.J.:[ˈkʌplə]K.K.:[ˈkʌplɚ]n.
1.翻译:连结者,配合者

coupler['kʌplə]n.
1.翻译:联结者,联结物
2.翻译:【音乐】(键盘乐器的)联键音栓,联奏器
3.翻译:【电工学】耦合器
4.翻译:(火车的) 车钩[亦称作 coupling]
5.翻译:【摄影术】耦合剂,成色剂

couplercoupler[ˈkʌplə]n.
1.翻译:连结者, 配合者
2.翻译:插头联结装置, 联接器; 管接头
3.翻译:【无】耦合器
4.翻译:【铁路】车钩
5.翻译:【摄】发色剂
6.翻译:【音】(风琴上连结两组键盘的)联奏器
7.翻译:填[补]充剂 coupler
noun
a thing that connects two things, especially mechanical components or systems
(尤指机械部件或系统的)连接物;连接器
a hydraulic coupler.
水力连接器。
[as modifier]coupler rod.
连接棒。
翻译:(Music)a device in an organ for connecting two manuals, or a manual with pedals, so that they both sound when only one is played
(乐)(键盘乐器的)联键音栓
翻译:(Music)(亦作 octave coupler)a similar device for connecting notes with their octaves above or below
(乐)八度联键音栓
翻译:(Photography)a compound in a developer or an emulsion which combines with the products of development to form an insoluble dye, part of the image
(摄)(彩色照片的)成色剂
翻译:(亦作 acoustic coupler)a modem which converts digital signals from a computer into audible sound signals and vice versa, so that the former can be transmitted and received over telephone lines
声耦合器

coupler

名词 coupler:

a mechanical device that serves to connect the ends of adjacent objects

同义词:coupling

特殊用法acoustic coupler
1.翻译:声[音]耦合器air hose coupler
1.翻译:软气管联结器antenna coupler
1.翻译:天线耦合器automatic coupler
1.翻译:自动联结器[耦合器], 自动车钩automatic approach coupler
1.翻译:自动进场耦合器automatic car coupler
1.翻译:自动车钩autopilot coupler
1.翻译:自动驾驶仪耦合器[联接器]balanced valve coupler
1.翻译:平衡式电子管耦合电路bar coupler
1.翻译:母线联络开关bidirectional coupler
1.翻译:双向耦合器bridge coupler
1.翻译:活动桥联结器cable coupler
1.翻译:电缆联接器car body coupler
1.翻译:车钩cathode coupler
1.翻译:阴极耦合器central automatic coupler
1.翻译:中央自动耦合器centre coupler
1.翻译:中心联接器coaxial directional coupler
1.翻译:同轴式定向耦合器coaxial variable direction coupler
1.翻译:同轴可变定向耦合器computing system coupler
1.翻译:计算系统耦合装置conductive coupler
1.翻译:电导耦合器control coupler
1.翻译:控制耦合器cross-guide coupler
1.翻译:十字形定向耦合器cryogenic coupler
1.翻译:低温连接器[耦合器]data set coupler
1.翻译:【自】数据集联接器digital autopilot coupler
1.翻译:数字式自动驾驶仪连接器[耦合器]diode coupler
1.翻译:二极管耦合器directional coupler
1.翻译:定向耦合器dissecting coupler
1.翻译:挤切连结器drawbridge coupler
1.翻译:开合桥耦合器dynamic coupler
1.翻译:电动式耦合腔earphone coupler
1.翻译:耳机耦合器electric bridge coupler
1.翻译:活动桥电路接合器electric coupler
1.翻译:电联结器, 电耦合器electric train line coupler
1.翻译:列车电线连接器electromagnetic coupler
1.翻译:电磁耦合器electron coupler
1.翻译:电子耦合器emergency coupler
1.翻译:紧急车钩装置fibre-optic(al) coupler
1.翻译:纤维光学耦合器fixed coupler
1.翻译:固定耦合器fixed section coupler
1.翻译:耦合器的固定端[部分]flexible head coupler
1.翻译:活头车钩fork coupler
1.翻译:叉形联结装置heater coupler
1.翻译:取暖耦合器horizontal container coupler
1.翻译:集装箱水平连接装置hose coupler
1.翻译:软管接头, 软管偶联器hydraulic coupler
1.翻译:液压系统管接头immersion coupler
1.翻译:浸入式热电偶inductive coupler
1.翻译:电感耦合器interface coupler
1.翻译:界面耦合器jumper coupler
1.翻译:跳线连接器[耦合器]linear coupler
1.翻译:线性耦合器link and pin coupler
1.翻译:杆销联结器loose coupler
1.翻译:弱耦合回路, 弱耦合器lubricating coupler
1.翻译:润滑器moving section coupler
1.翻译:耦合器的活动端[部分]multi-hole directional coupler
1.翻译:多孔定向耦合器multiple-path coupler
1.翻译:多路耦合器multistrip coupler
1.翻译:多带耦合器nonlinear coupler
1.翻译:非线性耦合器optical coupler
1.翻译:光耦合器optical fiber optoelectronic coupler
1.翻译:光纤光电耦合器orthomode coupler
1.翻译:正模耦合器overrunning coupler
1.翻译:超越离合器photoelectric coupler
1.翻译:光电耦合器plain coupler
1.翻译:普通套管接头quartz coupler
1.翻译:石英[晶体]耦合器radial butt coupler
1.翻译:回转车钩radio autopilot coupler
1.翻译:无线电自动驾驶耦合器reference coupler
1.翻译:基准耦合腔reflected wave coupler
1.翻译:反射波耦合器resistive-loop coupler
1.翻译:环状电阻耦合器, 环阻耦合器reverse coupling directional coupler
1.翻译:反相激励定向耦合器rotary coupler
1.翻译:【电磁】旋转耦合器self-aligning coupler
1.翻译:自动调整车钩shibata shiki coupler
1.翻译:柴田式车钩single-hole directional coupler
1.翻译:单孔定向耦合器slide coupler
1.翻译:可调耦合线圈, 滑动耦合器sprinkler coupler
1.翻译:喷灌装置管接头standard coupler
1.翻译:标准耦合腔[器]steam hose coupler
1.翻译:暖气软管联接器three-decibel coupler
1.翻译:【电磁】三分贝耦合器tight coupler
1.翻译:紧密连接器tightlock coupler
1.翻译:密结式车钩transvar coupler
1.翻译:定向可变[可调定向]耦合器two-hole directional coupler
1.翻译:双孔定向耦合器unidirectional coupler
1.翻译:单向耦合器unity coupler
1.翻译:单一耦合器variable coupler
1.翻译:可变耦合器waveguide coupler
1.翻译:波导耦合器waveguide directional coupler
1.翻译:波导型定向耦合器coupler for frequency meter
1.翻译:频率计耦合器

coupler

1. B. Connect the drainage accessory with the coupler.

將排水配件和連結器連接起來。

2. The coupler maded of Fe-Mn-Si-C shape memory alloys has very high connection strength and good pressure resistance.

Fe-Mn-Si-C记忆合金制成的管接头具有很高的连接强度和良好的耐压性能;

3. M2L15-1 couplers can be used as anchorage firstly and as coupler later , and are developed according to the practical needs of post-tensioned large co ncrete structures and research on existing products.

M1L15 1和M2L15 1连接器是根据大型预应力混凝土工程实际需要 ,在现有同类产品基础上开发的锚具与连接器合一的新产品 ,具有构造简单、外形小、成本低、适用性好的特点。

4. Improvement Study of TESLA Style HOM Coupler

TESLA式高阶模衰减器的改进与设计研究

5. Above 2 years design experience in RF filter, inductor, diplexer, balun transformer, combiner, splitter, directional coupler and other similar devices.

一年以上RF滤波器,电感器,双工器,平衡变压器,组合器,分离器,定向藕合器和其他类似RF部件设计经验

6. A motor rotates the coupler to which the color drum is attached.

一电动机旋转该固定有彩色圆筒的耦合器。

7. Research and Manufacture on a Kind of Small Coupler

一种小偶合器的研制

8. A Novel Three-Section Re-entrant Hybrid Coupler

一种新型三节重入式电桥

9. A New Type of Complex Star Coupler and Its Features

一种新型复合式星形耦合器及其性能分析

10. A coupler is attached to the color drum.

一耦合器固定在该彩色圆筒上。

11. Don't drill or weld on tube, coupler and plank frame.

不可以在架杆、扣件和踏脚板框架上打孔、电焊;

12. Compared with the traditional fused couplers both its hermetization and polarization insensitivity are improved.This kind of high performance coupler can be applied in harsh environment.

与传统熔融拉锥型单模光纤耦合器比较,可改善偏振特性,密封性好,具有高可靠性,能满足恶劣环境要求。

13. Two 10 foot color coded hoses with brass coupler

两个10英尺彩色软管,带黄铜连接器

14. In order to achieve power steering function in fuel cell bus,an electrohydraulic system is proposed,where the pump is directly driven by a DC motor through an axis coupler.

为了实现燃料电池电动客车的动力转向功能,提出了直流电机通过联轴机构直接驱动油泵的电动液压式动力转向系统。

15. Isosceles-prism method1.A isosceles-prism was used as the input and output coupler for thelight transmitted in the waveguide.

二、用散射光法测试平面光波导的损耗1.用一个对称棱镜作为输入、输出耦合器实现了光波在波导中的平面光波导损耗测试输入和输出。

16. Automobile fore axles; coupler yoke; L-A type combined brake beam; scrapers for coal mining machines.

产品简介:汽车前轴;钩尾框;L-A组合式制动梁;煤机刮板.

17. A method of movement identification about random type of revolute four-bar mechanism and method of realization of random point coupler curve by mouse-event was introduced.

介绍了任意铰链四杆机构运动识别及利用鼠标事件实现其任意点连杆曲线的方法。

18. In this paper, the photoelectric coupler s apply in the system with band transmissio experiment has been presented.

介绍了光电耦合器在兰州在线同位素分离器终端上的带传输实验中的应用。

19. The characteristics, basic circuit, and working wave pattern of transistor type optical coupler and its function in electronic control unit of hydraulic discharging machine were introduced.

介绍了晶闸管光耦合器的特性、基本电路、工作波形及其在液压下料机电子控制装置中的作用。

20. The type and working principle of 4WD which connected by cohesive shaft coupler are introduced, the effect of motor vehicle speed and tyre sliding rate on rotation difference of cohesive shaft coupler are described.

介绍了采用粘性联轴器连接的四轮驱动形式和工作原理,阐述了汽车速度、轮胎滑移率对粘性联轴器转速差的影响。

21. The conditions and contents of the new inspection,maintenance and operation code for coupler draft gears in the Russian Federal Railway are described.

介绍俄罗斯联邦铁路采用新的车钩缓冲装置的检修和运用规程的情况及规程的内容。

22. Described are the development process,structure features and operation of the railway coupler draft gears in U.

介绍美国铁路车钩缓冲装置的发展过程、结构特点及运用情况。

23. In view of running condition of motor vehicle, the possibility to use the cohesive shaft coupler in 4WD motor vehicles is analyzed by using pure longitudinal sliding theory model of tyre.

从汽车的行驶工况出发,采用轮胎纯纵滑理论模型,分析了四轮驱动汽车采用粘性联轴器的可能性。

24. The co-condesation polymer of cyanurotriamide and nitrogenous base S with formaldehyde as the coupler and a capping agnt can be used as a good retanning agent.

以三聚氰胺及含氮碱S为基本原料,辅以适当的偶联剂与封端剂进行缩合共聚,缩聚产物可用作复鞣剂。

25. AN UMBRELLA SHAPED LASER-FIBER COUPLER

伞形端头光源-光纤耦合器

26. According to induction and the work of authors, the potential applications in perfect lens antenna, phase-shifting line, balancer and coupler were given.

依据归纳法并结合作者的工作提出了开展此项研究在理想透镜天线、相移器、平衡器、耦合器等应用。

27. The Application Skills for Photoelectric Coupler

光电耦合器的实用技巧

28. Main products: Optical passive components : Coupler ,DWDM,WDM,Opticalswitch ,adaptor Attenuator full series Fiber Optic patchcord and Adapter project Epuipment.

公司主要产品 光无源器件:光分路器, 光波分复用器,光开关,光(固定,可变)衰减器 ,准直器, 塑料光纤,全系列光纤跳线,防水尾缆,光缆接续盒,终端盒。

29. To make connection, simply slip the adapter into the coupler.

公型接头放入母型接头。

30. The relative equipment`s coupler adopts the casting-seal structure.

关联设备耦合器采用浇封结构。

31. The chemical structure of the cyan DAR coupler was identified by IR, HNMR, MS and elemental analysis.

其结构经IR、HNMR、MS和元素分析等检测与所设计一致。

32. With design experience or knowledge in RF filter, inductor, diplexer, balun transformer, combiner, splitter, directional coupler and other similar devices preferred.

具备RF滤波器,电感器,双工器,平衡-不平衡变压器,组合器,分离器,定向耦合器及其他元器件设计经验或知识更佳。

33. AGRICULTURAL WHEELED TRACTORS AND IMPLEMENTS. THREE-POINT HITCH COUPLERS. PART 1: U-FRAME COUPLER.

农用轮式拖拉机和机具。三点联结连接器。第1部分:U型框架连接器。

34. The sensitivity of RPR-FORS was as a function of the resonator coupler transmittance and the coupling ratio, the resonator transmittance and the reflector reflectivity.

分析了无源环形谐振腔中定向耦合器的透过率、环形谐振腔的透过率与测量灵敏度的关系。

35. The coupler assembly with finite element analysis software I-DEAS is analysed considering the interactions between the components of coupler by defining contact.

利用I-DEAS软件对车钩的装配体进行有限元分析,车钩各零件的相互作用通过定义接触来传递。

36. Elastic trace of a flexible coupler is measured by optical instrument CCD (Charge Coupled Devices) and image card.

利用光学仪器 CCD(电荷耦合器 )和图像采集卡进行机构弹性轨迹的测量。

37. The structure of NCO-teminated polyurethane prepolymer and SPU was characterized by FTIR and GPC.Results showed that silane coupler was successfully grafted to the end of polyurethane prepolymer.

利用红外光谱(FTIR)和凝胶色谱(GPC)表征了PU和SPU预聚体的结构和分子量,证明了硅烷偶联剂成功地接枝于PU预聚体的端基上。

38. Electrical part of semi-permanent coupler

半永久车钩电器部分

39. CTR Technological Controlling on Photo Coupler

反射式光耦的CTR工艺控制

40. Controllable coupler control by U2.

可控耦合器被U2控制。

41. By the modulation of effective coupling length,CWC can accommodate wider multiplexing bandwidth than parallel straight waveguide coupler (SWC) in wavelength division multiplex (WDM).

同时由于等效耦合长度的调制作用使得弯曲波导耦合器在波分复用/解复用中比平行直波导耦合器具有更大的复用带宽;

42. There are so many components in fiber coupler packages that it is difficult to identify the specific components which should responsible for the optical property changes under environmental test.

同时耦合器封装系由各种不同材料结合而成,因此需藉由金相分析的实验来确定影响结构的材料参数。

43. coaxial variable direction coupler

同轴可变定向耦合器

44. Because the beam formed by a tapered coupler is produced by many rays that emerge at slightly different angles, the outgoing beam is characterized by a relatively large divergence.

因为尖劈耦合器形成的光束是由许多出射角稍有不同的光线组成的,放出射光束的特点是具有较大的发散度。

45. The losses of two kinds of structure are measured with Hewllet-Packed automatic network analyser(HP8510).The errors,caused by impedance mismatched between the helix and coupler are corrected.

在HP8510矢量网络分析仪上对两种结构的损耗进行了测量,并对螺旋线与能量耦合器之间的阻抗失配引起的误差进行了修正。

46. An X-band directional coupler is designed and tested,and the experimental result agrees well with theoretical curve.

在三厘米波段对实验样品的测试结果与理论结果相符。

47. In this case, recharge the batteries or use the DC coupler.

在这种情况下,重新给电池充电或使用电源适配器。

48. Improving of Outsourced Elastic Expandable Coupler

外购弹性可胀圈联轴器的改进

49. Main products: multipurpose quick coupler series; value pipe fitting series; shipping, automobile, mechanical fitting series; golf heads and steel or aluminum shoes moulds etc.

多用快速接头系列:阀门管件系列:船舶、五金、机械配件系列:高尔夫球头系列以及铸造钢铝鞋模等精铸件。

50. Datong Faiveley Yida Coupler Co., Ltd is a joint venture of Faiveleytransport and Datong Yida.Focuses on manufacturing couplers in railway industry.

大同法维莱亿达车钩有限公司是由法维莱运输(法国)集团和大同亿达共同出资建立的合资企业,专注于铁路专用的车钩系统。

51. The results of fiber coupler packages will be accepted if the measurements for the optical properties are within a small range change under the environmental tests.

如果该耦合器对环境变化有良好的稳定性,其光学特性变化将很小,若对环境变化稳定性不够,其光学特性改变将较大。

52. The safety shear pins consist of three Grade 5 (70 ksi shear strength) 3/16 inch diameter machine screws which connect at a threaded aluminum coupler.

安全剪切销构成三五年级( 70 ksi抗剪强度) 3 / 16英寸直径机螺钉连接在一个线程铝耦合。This is illustrated in Figure 5.这是说明了在图5 。

53. A new optical configuration of grating interferometer that based on polarization-maintained fiber optical coupler (FOC) is put forward.

实现了光栅干涉仪测量准确度与量程的分离,有望使光栅干涉仪的测量准确度进一步提高。

54. Experimental research shows that the coupler meet basically the coupling require of scanner.

实验研究显示耦合器基本能满足扫描系统的耦合要求。

55. Experimentation shows that the strategy obviously speeds up the response of photoelectric coupler compared with usual design.

实验结果表明,该方案较光电耦合器之常规用法,速度提高明显。

56. Delivery performance test shows that this wave guide coupler system may help much in improving the transmitting property of CO2 laser hollow wave guide.

对此耦合系统的传输性能测试表明,使用该锥形空芯波导耦合器能够显著提高空芯波导的激光传输性能。

57. The composition desribs 2 eguivalent magenta color coupler of sulphide type comparing with 4 equivalent color coupler to have higher photographic activity and stability and explains difference between it and DIR magenta color coupler.

对硫醚类二当量品红成色剂与四当量成色剂进行了比较,说明所述成色剂有更高照相活性与稳定性,并解释了与 D I R 品成色剂的区别。

58. Symmetric fiber grating coupler and its application

对称结构光纤光栅耦合器及其应用

59. The difficulties in NC machining technology of precision coupler shell part in products of aeronautics and astronautics.

对航空航天产品中精密偶件壳体等几类通用零件的数控制造工艺难点进行探讨,阐述一些工艺要点及关键。

60. Compared with the conventional optical coupler, the hybrid refractive-diffractive system offers considerable reduction in the apparent size, weight, and improves the image quality.

对设计结果的分析表明,折-衍混合耦接器不仅在光学性能方面优于传统的光学耦接器,而且在尺寸和质量上有显著的减少。

61. Connect the drainage accessory with the coupler.

将排水配件和连结器连接起来。

62. During operation, temperature of the coupler base inside the bulb is relatively high.It's necessary to install radiator or aluminum plate.Area of the aluminum plate: >200 cm3.

工作时,灯炮内耦合器底座温度较高,必须安装散热器或铝板帮助散热.

63. Now our product lines include 1x3, 3x3 single fused couplers, ultra low PDL coupler, single mode WDMs, broadband single window couplers, broadband dual window couplers, attenuators, patchcords, etc.

巨锟科技所生产的高品质光通讯被动原件产品拥有超低损失、高隔离度、极低PDL等特性。

64. The threaded deformed reinforcing bar is used in concrete construction and may be easily connected to other threaded deformed reinforcing bars by an internally threaded coupler.

带有螺纹的异形加强筋被用在混凝土结构中,并且通过车有内螺纹的连接件易于与其它带有螺纹的异形加强筋相连接。

65. CHANG Jun, Liu Tong-yu2, Wang Qing-pu, Zhang Xing-yu, Wang Qian, Ma Liang-zhu, Li Yong-fu, Wang Hong-chun, Single-end Fiber Optic Vibration Sensor Based on Over-coupled Fused Coupler, Optoelectronics Letters, Accepted.

常军,王青圃,张行愚,刘统玉,马良柱,李永富,过度耦合融熔双锥型单端光纤振动传感器,光电子?激光,已接收,2006.

66. Their joint rotation space(JRS) of both side bars and workspace of coupler points are basic issues in designing planar parallel manipulators.

平面五杆机构是平面并联机械手的最基本形式,对其两连架杆转角空间及连杆点工作空间的研究是设计平面并联机械手的基本问题之一。

67. Using the temperature as the boundary condition field, the transient analysis of fiber coupler in the process of fused biconical taper was accomplished and stress-strain field was obtained.

并以此温度场作为边界条件,结合有限元软件对光纤耦合器熔融拉锥过程进行热瞬态数值分析,得到了光纤耦合器在熔融拉伸过程中的应力应变场。

68. Established in 1987, Guangzhou Mingda Hardware is specialized in manufacturing pneumatic tool accessories, such as quick coupler, air hose, air blow gun, piston/driver for stapler and nailer.

广州市明达五金制品有限公司成立于1987年,专业生产各类快速接头及PU,PE空压气管,气动枪针,塑料吹尘枪。配备高级技术人员,拥有先进的高速数控机床。

69. Established in 1987, Guangzhou Mingda Hardware is specialized in manufacturing pneumatic tool accessories, such as quick coupler, air hose, air blow gun, piston/driver for stapler and nailer.

广州市明达五金制品有限公司成立于1987年,专业生产各类快速接头及PU,PE空压气管,气动枪针,塑料吹尘枪。

70. The applied examples show that magnetic coupler achieves the non-contacting and hermetical drive without any leakage at the conditions of high-pressure or high-vacuum, etc.

应用实例表明,采用磁力驱动密封装置,对于高压、高真空等工况,均可实现无接触的密闭传动,达到无泄漏。

71. Study of GaAs Asymmetric X-Junction Waveguide Hrybrid Coupler[J].

引用该论文 冯浩,王明华,胡小文,杨建义.

72. Design of Temperature-Insensitivity for 120 nm Waveband Fluorinated Polyimide Waveguide Coupler[J].

引用该论文 卢红亮,陈抱雪,赵德欣,矶守,袁一方,贾洪波,梁东波,龙彩华.

73. Development of fused biconical taper wide band coupler[J].

引用该论文 吕敏,冯志江,杨笛,张素娟.

74. Study on a Continuous Wave High Power Solid State Laser with a VRM Output Coupler[J].

引用该论文 夏文建,李正佳,朱长虹,应花山,丘军林.

75. Dammann Grating-Based Dynamic Optical Coupler[J].

引用该论文 底彩慧,周常河.

76. Cassegrain Unstable Resonator with Variable Reflectivity Mirror (VRM) Output Coupler[J].

引用该论文 张放,张平雷,周寿桓.

77. Laser Cladding and Surface Hardening of Railcar Coupler Based on Green Remanufacture Engineering[J].

引用该论文 田威,廖文和,刘长毅,于连友.

78. Solution of field distribution in stripline directional coupler[J].

引用该论文 石德万,王文祥,宫玉彬,魏彦玉.

79. A study on the oil leakage in elastic coupler

弹性联轴节甩油问题分析及改进措施

80. A Q?switched laser output of 32.5W with 350W pumping power is obtained at 7kHz using a 30% output coupler.

当泵浦功率约为350W时,采用透过率为30%的输出耦合镜,调Q激光输出功率32.5W,脉宽约200ns,重复频率7kHz;