fluorescence decay system

sound attenuation

消声器（噪声衰减装置）

calibrating set for resistance attenuator

电阻衰减器校正装置

attenuator: a device that attenuates an electrical signal.

衰减器,减压器: 使电子讯号减弱的装置。

A device that attenuates an electrical signal.

衰减器，减压器使电子讯号减弱的装置

The Evaluation of Standard Measurement Uncertainty with FSMR

FSMR衰减标准装置的不确定度评定

Setting the current rising and reducing device. The time can be adjusted.

设有电流上升、电流衰减自动装置，时间长短可调。

panel mount variable optical attenuator

面板安装可变光衰减器

An electronic device that is capable of relaying a signal without attenuation in velocity.

人造神经纤维一处能中转传递信号的电子装置，无速度上的衰减

The uncertainty in the measuring range of 0-42dB is less than 5×10~(-4).

该装置在0—42分贝的衰减测量量程内,达到的不确定度优于±5×10~(-4)。

This paper describes the main characteristics of the 30 MHz WBCO attenuator standard and the calibration system.

本文介绍30兆赫截止衰减器一级标准及其校准装置的一些主要特点。

hazard reducing device

减危装置 -防触电用

geared propulsion machinery

齿轮减速式推进装置

intermediate wheel gear

带中间齿轮的减速装置

deceleration spark advance control

减速点火提前控制装置

activated anti-rolling tank stabilization system

主动水舱式减摇装置

passive tank stabilization system

被动水舱式减摇装置

geared-diesel installation

齿轮减速式柴油机装置

diesel-electric reduction

柴油机电动减速装置