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关注：1
2013-05-23 12:21
求翻译：抽真空更加效率，真空泵使用寿命。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
抽真空更加效率，真空泵使用寿命。
问题补充： |
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2013-05-23 12:21:38
More efficient vacuum, vacuum pump service life.
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2013-05-23 12:23:18
vacuum, vacuum pump life more efficient.
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2013-05-23 12:24:58
Pulls out the vacuum efficiency, the vacuum pump service life.
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2013-05-23 12:26:38
Vacuum more efficiency, service life of vacuum pumps.
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2013-05-23 12:28:18
Smoke the vacuous efficiency, the service life of vacuous pump.
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