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关注：1
2013-05-23 12:21
求翻译：使用干式打磨或喷涂操作时，必须配戴合适的口罩是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
使用干式打磨或喷涂操作时，必须配戴合适的口罩
问题补充： |
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2013-05-23 12:21:38
Use dry grinding or spray operation, must wear the appropriate mask
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2013-05-23 12:23:18
Use dry grinding or spraying operation, must wear appropriate masks
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2013-05-23 12:24:58
When use dry type polish or spray coating operation, must have one's eyes tested and wear glasses the appropriate mouthpiece
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2013-05-23 12:26:38
Use of dry sanding or spraying operation, you must wear appropriate masks
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2013-05-23 12:28:18
Use dry grinding or spray operation, must wear the appropriate mask
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