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evacuation of vacuum tube
释义
evacuation of vacuum tube
[网络]
真空管的抽空法;真空管抽空法
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packing-case
packing case carton
packing cases
packing-cases
packing case wood
packing cell
Packing Certificate
packing chamber
packing charge
packing charges
packing chest
packing chromatography
packing clause
packing cloth
packing code
packing coefficient
packing coil
packing collar
packing (collar)
packing column
packing compact
packing company
packing compound
packing compressor
packing concrete in forms
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更新时间:2026/8/24 9:02:28