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关注：1
2013-05-23 12:21
求翻译：最小空顶距0.3m,最大空顶距0.8m。采用短掘短支的方法，及时进行支护。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
最小空顶距0.3m,最大空顶距0.8m。采用短掘短支的方法，及时进行支护。
问题补充： |
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2013-05-23 12:21:38
Minimum air zenith distance 0.3m, the largest air zenith distance 0.8m. Support the use of short-dig method of short, timely supports.
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2013-05-23 12:23:18
Relations between 0.3 m away from the small space, the largest air distance between 0.8 m. Adopt a short dig short support methods and carry out a timely support care.
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2013-05-23 12:24:58
Smallest spatial zenith distance 0.3m, most greatly spatial zenith distance 0.8m.Uses digs the short method short, carries on the supports and protections promptly.
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2013-05-23 12:26:38
Minimum air leading 0.3M, the maximum empty leading 0.8M. Short short excavation methods, timely support.
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2013-05-23 12:28:18
正在翻译，请等待...
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