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Tom has a frame their own small plane.
汤姆有一架自己的小型飞机。
youdao
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The analytic method for the free vibration of plane frame structure is presented.
介绍了一种平面杆系结构自由振动的解析解法。
youdao
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The analytic method for the free vibration of plane frame structure is presented.
介绍了一种平面杆系结构自由振动的解析解法。
youdao