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關注：1
2013-05-23 12:21
求翻譯：因故停鉆時，孔口應護蓋，嚴禁鉆錐留在孔內，以防埋鉆；是什么意思？ 待解決
 懸賞分：1
- 離問題結束還有
因故停鉆時，孔口應護蓋，嚴禁鉆錐留在孔內，以防埋鉆；
問題補充： |
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2013-05-23 12:21:38
Reason to stop drilling, the holes should cover, non-cone drill to stay in the hole, to prevent underground drilling;
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2013-05-23 12:23:18
正在翻譯，請等待...
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2013-05-23 12:24:58
When stops drilling for some reason, the manhole should the protecting cover, forbid strictly drilling the awl to keep in the hole, guards against buries drills;
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2013-05-23 12:26:38
Stop drilling time, orifice should cover, drilling cone is strictly prohibited to stay in holes in the case of bury drills;
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2013-05-23 12:28:18
Reason to stop drilling, the holes should cover, non-cone drill to stay in the hole, to prevent underground drilling;
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