Finally,a new muffler device is designed to conquer the high thickness of bug dust and high humidity.
最终设计出了满足高湿度、高粉尘环境条件下运行的消声装置。
Design of a Diesel Engine Exhaust Particulate-trap and Noise-silence System
柴油机排气微粒收集消声装置的设计
Design on Air Door and Silencer in Forced Ventilation in Colleries.
煤矿压入式通风系统中风门和消声装置设计
Special noise elimination setting restrain machinery noise.
*特殊设计的专用降噪消声装置的采用，极大的抑制了机械噪声。
sound attenuation
消声器（噪声衰减装置）
On the Experimental Apparatus for Ultrasonic Disruption in the Treatment of Intracerebral Hematoma;
超声消融术治疗脑血肿的实验装置的研究
a pipe through which burned gases travel from the exhaust manifold to the muffler.
一种经此燃烧气体将从排气集管排放到消声器的装置。
automatic focus and stigmator
自动调焦和消象散装置
registered fire services installations contractor
注册消防装置承办商
Certificate of Fire Service Installations and Equipment
消防装置及设备证书
fire services installations [public works category]
消防装置〔公共工程类别〕
provision of fire services installation and equipment
提供消防装置和设备
control for automatic fire protection equipment
自动消防设备控制装置
automatic ultrasonic testing device
自动超声波探伤装置
voice-operated gain-adjusting device (VOGAD)
声音工作增益调整装置
sonic nozzle flow prover
声速喷嘴流量检定装置
Determination of Direction and Range
定向与测距装置(超声波)
A device used underwater to produce pulses of sound, as for an echo sounder.
声脉冲发送器置于水下产生声脉冲的装置，如回音器中的装置
a device on an automobile for making a warning noise.
装在汽车上制造警告声音的装置。