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.
Numerical analysis of the effect of structural parameters on the acoustic attenuation performance of straight-through perforated tube silencers
结构参数对直通穿孔管消声器消声性能影响的数值分析
3.
Investigation on Noise Elimination Nozzle with Micro-Perforated Panel in Pulse Detonation Engine
脉冲爆震发动机微穿孔消声喷管研究
4.
Aeroacoustic Analysis of Non-Concentric Perforated Mufflers in Mining Trucks
非同轴穿孔矿用汽车排气消声器声学性能分析
5.
Producing Mechanism of Flow Noise Generation from Perforated Duct Muffler Element
穿孔管消声单元气流再生噪声产生机理
6.
expendable through-tubing perforator
消毁式过油管射孔器
7.
No inadvertent respiratory placement of feeding tubes or perforation of the GI tract occurred.
无呼吸道内置管或消化道穿孔等并发症。
8.
paper tape puncher
纸带穿孔器纸带凿孔机
9.
Diagnostic Value of X-ray and Ultrasonogrophy in Digestive Tract Perforation
消化道穿孔的超声检查与X线检查的临床诊断价值
10.
2 All welds for nozzles and manways shall be full penetration through the vessel wall.
接管和人孔的焊缝应为穿过容器壁的全熔透。
11.
Optimization design and experimental model analysis of complex throttle injection with small apertures spray muffler
节流降压-小孔喷注消声器优化设计与模态分析
12.
hole-conductor current access device
穿孔导体电流存取器件
13.
circular perforated air diffuser
环形穿孔空气扩散器
14.
a pipe carrying fumes from the muffler to the rear of a car.
一种从消声器中运到汽车尾部的管道。
15.
Research on Experimental Measurement Technique for Acoustic Performance of Ducts and Silencers
管道和消声器声学性能的试验测量技术研究
16.
a container with a handle and a spout with a perforated nozzle; used to sprinkle water over plants.
有柄的容器和有穿孔的喷嘴的喷管；用于往植物表面喷洒水。
17.
I plant professional sound system automobile production products, including various types of noise on tailpipe and related products.
我厂专业生产汽车消声系统产品，包括各类消声器尾管及相关产品。
18.
expendable-retrievable gun
可回收的消毁式射孔器