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关注：1
2013-05-23 12:21
求翻译：Our filter systems are certified for W-2 and W-3 according to the directives of the German Institute for Occupational Health and Safety.是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
Our filter systems are certified for W-2 and W-3 according to the directives of the German Institute for Occupational Health and Safety.
问题补充： |
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2013-05-23 12:21:38
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2013-05-23 12:23:18
我们的过滤系统的认证 W 2 和 W 3 的指令 , 德国的职业保健和安全研究所。
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2013-05-23 12:24:58
Our filter systems are certified for W-2 and W-3 according to the directives of the German Institute for Occupational Health and Safety.
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2013-05-23 12:26:38
我们过滤系统为 W 2 和 W-3 被证明了的德国研究所指令为职业健康和安全。
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2013-05-23 12:28:18
正在翻译，请等待...
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