penetration tube是什么意思

用法例句

The experimental research on the low-voltage electromagnetic compaction of PZT ceramic powders;

PZT陶瓷粉末低电压电磁压制实验研究

Effect of pattern of applied voltage on formation of anodic TiO_2 porous films;

电压施加方式在阳极氧化钛薄膜形成过程中的作用

Reasons of voltage promoting of 29DN350-type ion-exchange membrane electrolyzers;

29DN350型离子膜电解槽电压升高原因剖析

In this paper,the relation of sensitive concrete's temperature and electric voltage change is studied theoretically and experimentally.

本文从理论和实验两方面研究了机敏砼温度与电压变化的关系。