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单词
chemical ion pump
释义
chemical ion pump
chemical ion pump
[
′kem·i·kəl ′ī·ən ‚pəmp
]
(chemical engineering)
A vacuum pump whose pumping action is based on evaporation of a metal whose vapor then reacts with the chemically active molecules in the gas to be evacuated.
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更新时间:2025/10/9 8:22:52