vacuum cylinder是什么意思

用法例句

The theory and the process of a technique called vacuum vaporization is presented that the material is Vaporized in vacuum and then cooled down rapidly-which could be used to fabricate nano-matefials.

介绍了真空汽化冷凝技术制备纳米级材料实验的原理和过程,用真空汽化冷凝技术制备纳米块状锌,并用扫描电镜观察纳米锌的形貌、晶粒度,用X射线衍射测定真空汽化冷凝钠米锌的生长方式及择优取向,用显微硬度计测定了合金锌、粉状锌以及纳米锌的显微硬度,并对此进行了分析。