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关注：1
2013-05-23 12:21
求翻译：Such a valve box is intended to be embedded in the covering of a roadway with a particular height that may vary from one roadway to the next. The problem then arises of wedging the collar in the vertical position relative to the base so as to keep the collar at a desired height relative to the ground until the roadway 是什么意思？ 待解决
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- 离问题结束还有
Such a valve box is intended to be embedded in the covering of a roadway with a particular height that may vary from one roadway to the next. The problem then arises of wedging the collar in the vertical position relative to the base so as to keep the collar at a desired height relative to the ground until the roadway
问题补充： |
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