vernier level

In this paper,the principle of the VET(vernier etalon) and OAM(Optical Activity Monochromator)is described and a method of measuring tunable laser wavelength by using multiple VETs proposed.

它由两组游标标准具ＶＥＴ（ＶｅｒｎｉｅｒＥｔａｌｏｎ）和一旋光单色仪ＯＡＭ（ＯｐｔｉｃａｌＡｃｔｉｖｉｔｙＭｏｎｏｃｈｒｏｍａｔｏｒ）组成，波长测量重复精度优于±５０ＭＨｚ，测量波段为０。

The principle of measuring the wavelength of continuous wave tunable laser by using multiple vernier etalons is proposed.

提出了用多重游标标准具ＶＥＴ（ＶｅｒｎｉｅｒＥｔａｌｏｎ）测量连续可调谐激光器输出波长的原理，并用自行设计的两个ＶＥＴ和一台小型的光栅单色仪组成的波长计测量了ＣＲ８９９－２１型激光器８００ｎｍ处的输出波长，波长测量精度优于１×１０－６。

Piezoelectric Composites Standard Reference hydrophone for the frequency rang 100～500kHz

100kHz-500kHz压电复合材料标准水听器

Guide to hearing aid standards

GB/T11452-1989助听器标准的指南

His listening comprehension and oral ability are good enough to go to the States.

他的听力和口语水平达到赴美标准。

The movable target on a leveling rod.

视准器水准尺上可移动的目标

radio sonobuoy and hydrophone

无线电声纳浮标与水下听音器

Estimation of the Underwater Target Based on NEMS Vector Hydrophone

基于纳机电矢量水听器的水下目标估计

Present Status of Standards Testing and Certification of Solar Water Heaters in Europe;

欧洲太阳热水器标准、检测和认证现状

An Absolute Calibration Method of PVDF Membrane Hydrophone

聚偏氟乙烯薄膜水听器的绝对校准方法

Calibration of Bi-hydrophone Used in Acoustic Intensity Measurement System

声强测量系统用双水听器的校准方法研究

Tri-axis Vector Hydrophone and Research of Low Frequency Calibration

三维矢量水听器及其低频校准方法的研究

DOA Estimation of Multi-Sources by Single Vector Transducer;

单矢量水听器多目标方位估计方法研究

The Study of Estimating the Bearing of the Target with the Vector Sensor;

矢量水听器确定声源目标方位技术研究

Identifying multiple targets by a single vector hydrophone based on the cross-spectrum goniometry

单矢量水听器基于互谱测向的多目标分辨

Application of Data Fusion Technology in Vector Hydrophone Bearing Estimation

数据融合在矢量水听器目标定向估计中的应用

reference cavity

标准[基准]空腔谐振器

The Research of Calibration Method for Plural Hydrophone Sensitivity Using Laser Doppler Technique;

使用激光多普勒技术校准水听器复数灵敏度方法研究

calibration marker

校准指示器, 校准标记(频标, 时标)

UART CHIP(Universal Asynchronous Receiver/Transmitter)

标准异步接收器／发射器