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關(guān)注:1
2013-05-23 12:21
求翻譯:The chamber has been pumped to 50 microns (Heat Safe Vacuum, section 8.2.1.11).是什么意思?![]() ![]() The chamber has been pumped to 50 microns (Heat Safe Vacuum, section 8.2.1.11).
問(wèn)題補(bǔ)充: |
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