1.
The Contrast of Simple Expanded-muffler with Large Porosity Perforated Muffler
简单扩张式消声器与穿孔管消声器对比研究
2.
Study on Aerodynamic Quality and Fluid Simulation of Expansion Mufflers
扩张式消声器的流体仿真及空气动力性能研究
3.
The Application Research of Expanding Room Muffler in Toilet Noise Control;
扩张室消声器在座便器噪声控制中的应用研究
4.
expandable spreader
伸缩式吊具伸缩式扩张器
5.
Fluid Dynamic and Acoustic Performance Analysis of Automotive Expansion Chamber Muffler;
车用扩张腔消声结构流体力学与声学性能的研究
6.
The Noise Elimination Capability of Diffusive Silencer and It's Air Flow Filed Analysis;
扩散型消声器的消声性能及其空气动力性能研究
7.
irrigating dilator
①灌注扩张器②尿道冲洗扩张器
8.
China advocates prevention of the proliferation of nuclear weapons as part of the process of eliminating such weapons.
在实现消除核武器目标的过程中，中国主张防止核武器扩散。
9.
Design and Related Study for Expanded Lumbar Interbody Fusion Cage
新型扩张式腰椎椎间融合器的研制和相关研究
10.
Biomechanical study on a new expanded cage for lumbar interbody fusion
新型扩张式腰椎椎间融合器的生物力学评价
11.
The using of expanding cage in the lumbar interbody fusion
扩张式椎间融合器在腰椎融合术中的应用
12.
Flow Filed Analysis and Experimental Study on Tubular Dissipative Silencer;
筒式阻性消声器流场分析及试验研究
13.
A loudspeaker magnifies the human voice.
扬声器扩大人的声音。
14.
A portable device consisting of a microphone attached to a loudspeaker, used especially to amplify the voice.
手提式扩音器一种便携的由麦克风和扩音器连在一起的设备，专用来扩大声音
15.
the stomach is a distensible organ.
胃是可以扩张的器官。
16.
diffuse-field response of microphone
传声器扩散声场频率响应；传声器扩散场响应
17.
expanding ridged tractor roller
可拖拉扩张式凸纹滚柱
18.
sound attenuation
消声器（噪声衰减装置）