Do you think there is big difference between 1.5mm and 3mm? I am a mechanical engineer. To make difference just by steel bar only, half inch is minimum.
回複:回複:回複:幾種轎車窗框的結構測試
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回複:回複:回複:回複:幾種轎車窗框的結構測試
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08/28/2010 postreply
21:05:04