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关注：1
2013-05-23 12:21
求翻译：人字梯的中间必须要有撑杆牵引拉住，否则不得使用是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
人字梯的中间必须要有撑杆牵引拉住，否则不得使用
问题补充： |
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2013-05-23 12:21:38
Ladders must have a pole in the middle of the traction pull, or not use
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2013-05-23 12:23:18
Who among the staircase there must be a pole vault, you may not use tractor pulling
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2013-05-23 12:24:58
Human character ladder among must have to have the stay rod to tow holds on, otherwise does not have to use
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2013-05-23 12:26:38
People must have a Struts traction tension in the middle of the ladder, shall be used
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2013-05-23 12:28:18
Human character ladder among must have to have the stay rod to tow holds on, otherwise does not have to use
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