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关注:1
2013-05-23 12:21
求翻译:The backfilled material which needs to be of a certain weight in order to lock in the tunnel horizontally has a higher unit weight compared to the original marine clay.是什么意思?![]() ![]() The backfilled material which needs to be of a certain weight in order to lock in the tunnel horizontally has a higher unit weight compared to the original marine clay.
问题补充: |
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