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qiaoziqiang
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樓主  發(fā)表于: 2015-05-27 23:15
用什么方法可以合理的計算出出當前的卷經(jīng)！我的初始卷經(jīng)位70MM    
   有膜的厚度是可以的  但是每次做的膜是不樣！請教師傅？還有其他更好的公式嗎？
自游自在
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1樓  發(fā)表于: 2015-05-31 11:28
用超聲波傳感器很準確

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