The metal bath to determine microamount oxygen in molybdenum by impulse heating under inert gas is investigated.
本文研究了脉冲惰气熔融测定钼中微量氧所用的浴料。
2
Objective:To probe into methods to prevent microamount air from entering into blood vessels for patients accepting intravenous injection.
探讨输液中进行静脉注射预防微量空气进入血管的方法。
3
The characteristics of boron element and its effect in cast steel are introduced. Microamount boron can improve the hardenability and toughness of carbon steel.