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关注:1
2013-05-23 12:21
求翻译:the boom shall be taken to be inclined horizontally at an angle of 20 degrees to the direction of travel at the moment of collision.是什么意思?![]() ![]() the boom shall be taken to be inclined horizontally at an angle of 20 degrees to the direction of travel at the moment of collision.
问题补充: |
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