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關注：1
2013-05-23 12:21
求翻譯：this can be avoided by designing a second platform to hold the mass ,which is hung from the first platform by knife edges是什么意思？ 待解決
 懸賞分：1
- 離問題結束還有
this can be avoided by designing a second platform to hold the mass ,which is hung from the first platform by knife edges
問題補充： |
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