真空系统严密性试验
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Vacuum system tightness test 真空严密性试验
tightness test of vacuum system 真空系统严密性试验
vacuum tightness test
真空密性试验
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Accommodation air-condition Freon piping to be done air-tightness and vacuum test.
房舱空调氟利昂管系密性试验和真空试验。
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Ref. Freon piping to end up done air-tightness test and vacuum test.
冷藏氟利昂管系密性测验和真空测验。
Ref. Freon piping to be done air - tightness test and vacuum test.
冷藏氟利昂管系密性试验和真空试验。
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