銅可以分為哪幾類如何區分 - 汽車
By Sandy
at 2011-11-07T00:00
at 2011-11-07T00:00
Table of Contents
關於銅的幾個問題請教一下1.青銅如何區分.我只知道水龍頭.拜拜用品為青銅.那一般機具油壓管接頭上看起來黃黃但又不很亮的因該屬於哪一類2.漆包線跟紅面如何區分.兩者皆屬紅銅類是否3.何謂衛生青銅4.銅的細分為幾類(希望告知特徵.及那些東西會有.因小弟從事資源回收.想分的細一點賺取更好的利潤
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By Charlotte
at 2011-11-09T12:33
at 2011-11-09T12:33
By Barb Cronin
at 2011-11-09T09:10
at 2011-11-09T09:10
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