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關注：1
2013-05-23 12:21
求翻譯：To be able to define the kinetic and potential energy densities and to describe the orientation of the shaft element in its deflected position one needs to apply a coordinate transformation是什么意思？ 待解決
 懸賞分：1
- 離問題結束還有
To be able to define the kinetic and potential energy densities and to describe the orientation of the shaft element in its deflected position one needs to apply a coordinate transformation
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