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关注：1
2013-05-23 12:21
求翻译：During the last decades of the 20th century, no-dig contractors realized that a horizontal DTH (Down the Hole) method could be the answer for that need.是什么意思？ 待解决
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- 离问题结束还有
During the last decades of the 20th century, no-dig contractors realized that a horizontal DTH (Down the Hole) method could be the answer for that need.
问题补充： |
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