This paper mainly discussed about the research on microbubbles generation by metal microporous tube, it is a new method of bubble formation.

本文主要研究了用金属微孔管制造微气泡，这是一种比较新颖的气泡制造方法。

youdao

This paper puts forword a method of collecting ammonia in the air of workshop by silicagel tube replacing the big bubble collection , and analyzing quantitavely with Nashi - colorimetry.

本文提出了利用硅胶管代替大气泡采集车间空气中的氨和纳氏比色法定量分析的方法。

youdao