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关注：1
2013-05-23 12:21
求翻译：氩气（纯度大于99.99%）作为工作气体，真空室中本底真空度为4×10-4 Pa。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
氩气（纯度大于99.99%）作为工作气体，真空室中本底真空度为4×10-4 Pa。
问题补充： |
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2013-05-23 12:21:38
Argon (purity> 99.99%) as the working gas, the vacuum chamber of the background vacuum of 4 × 10-4 pa.
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2013-05-23 12:23:18
Argon Gas (purity greater than 99.99 %) as a working gas in vacuum chamber, vacuum the floor for 4 X 10-4 Pa .
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2013-05-23 12:24:58
The argon (purity is bigger than 99.99%) to take the working gas, in the vacuum chamber the background vacuum degree for 4×10-4 Pa.
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2013-05-23 12:26:38
Argon (purity greater than 99.99%) as the working gas, end of the vacuum in the vacuum chamber for the 4x10-4 Pa.
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2013-05-23 12:28:18
正在翻译，请等待...
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