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关注：1
2013-05-23 12:21
求翻译：焊接在自动龙门埋弧焊机上进行，操作人员必须经过培训，持证上岗。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
焊接在自动龙门埋弧焊机上进行，操作人员必须经过培训，持证上岗。
问题补充： |
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2013-05-23 12:21:38
Welding on automatic gantry submerged arc welding machine, the operator must be trained and certificates.
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2013-05-23 12:23:18
Soldering in the Auto portal arc welding machine, operating personnel must be trained and certified workers.
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2013-05-23 12:24:58
正在翻译，请等待...
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2013-05-23 12:26:38
On the gantry welding in automatic submerged arc welding machine, operators must be trained, a holder.
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2013-05-23 12:28:18
The welding carries on in the automatic Dragon Gate submerged-arc welding machine, the operator must pass through training, holds the card mount guard.
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