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关注：1
2013-05-23 12:21
求翻译：双端面机械密封保证水泵安全可靠运行是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
双端面机械密封保证水泵安全可靠运行
问题补充： |
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2013-05-23 12:21:38
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2013-05-23 12:23:18
double face mechanical seal pumps guarantee reliable operation
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2013-05-23 12:24:58
Double-end surface mechanical seal guarantee water pump safe reliable movement
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2013-05-23 12:26:38
Double-end mechanical seal ensuring water pump is safe and reliable operation
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2013-05-23 12:28:18
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