1.
Frequency of the wide-band sandwich transducer with single hole in relation of the hole's size
穿单孔换能器的频率与孔尺寸间的关系研究
2.
punched tape to magnetic tape converter
穿孔纸带到磁带的转换器
3.
punch card to magnetic tape converter
穿孔卡片到磁带的转换器
4.
directional single-plane jet perforator
单面定向聚能弹射孔器
5.
undirectional n.
[港台] 单向转换器；[大陆] 单向换能器
6.
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
7.
paper tape puncher
纸带穿孔器纸带凿孔机
8.
CALCULATION METHOD OF EQUIVALENT MASS OF TRANSDUCER WITH PER-FORATED STRUCTURE
多孔结构换能器等效质量的计算方法
9.
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
10.
Experimental Investigation on Energy Conservation Performance of Finned-Tube Refrigeration Heat Exchanger with Circular Holes
圆孔翅片管式制冷换热器的节能性能试验
11.
hole-conductor current access device
穿孔导体电流存取器件
12.
circular perforated air diffuser
环形穿孔空气扩散器
13.
Chinese Measurement Converter Smart Tag Plugin
中文度量单位转换器智能标记插件
14.
quicksilver ability
无孔不入的穿插能力
15.
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
16.
being without punctures or incapable of being punctured.
没有穿孔或不能被穿透的。
17.
Any tape punch that automatically converts coded electrical signals into perforation in tape.
自动地将编码电信号变换为纸带上的穿孔的任何纸带穿孔机。
18.
The use of perforated structure can increase the bandwidth transducer, which is a new theoretical problem in designing transducer devices.
利用多孔结构增加换能器频带宽度,是换能器设计方面的一个新的理论问题。