vacuum: n.(pl. vacuums, vac-ua )1.真空；空处，空虚，空白。2.〔美口〕吸尘器(＝ vacuum cleaner)。短语和例子a low [partial] vacuum低度[未尽]真空。 feel a vacuum in the lower regions 〔戏谑语〕觉得饿。vi.,vt.〔美口〕1.用吸尘器扫除。2.用真空干燥机干燥。adj.1.真空的。
Space product assurance - thermal vacuum outgassing test for the screening of space materials 航天产品保证.航天材料筛选的热真空除气试验
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Space product assurance - thermal vacuum outgassing test for the screening of space materials 航天产品保证.航天材料筛选的热真空除气试验
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Aerospace - space product assurance - thermal vacuum outgassing test for the screening of space materials ; german and english version en 14091 : 2002 航空航天.航天产品保证.航天材料热真空除气筛选试验
