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关注：1
2013-05-23 12:21
求翻译：平台吊车起重作业的安全要求是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
平台吊车起重作业的安全要求
问题补充： |
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2013-05-23 12:21:38
Safety requirements of the platform crane lifting operation
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2013-05-23 12:23:18
A crane lifting platform security requirements of the
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2013-05-23 12:24:58
The platform crane lifts heavy objects the work the safety requirements
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2013-05-23 12:26:38
Platform security requirements for crane lifting operation
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2013-05-23 12:28:18
platform crane lifting job security requirements;
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