highest vacuum
... higher polymer 高聚物 highest vacuum 高度真空 highly acid 强酸性的;高酸的 ...
vacuum high
电机工程专业英语词汇翻译V-2-SCIdict学术... ... 真空式保护器 vacuum type protector 高度真空 vacuum, high 低度真空 vacuum, low ...
high-vacuum tube ; pliotron ; hard tube ; tube
high vacuum ; pump
ultrahigh vacuum