P:2012-01-12 14:59:05
2
圓銅線應(yīng)采用GB3952規(guī)定的熱軋黑銅桿制造,在GB3952中分為熱態(tài)和硬態(tài),只有熱態(tài)銅桿的體積電阻率不大于0.017241,這樣推下來(lái)應(yīng)該是熱態(tài)銅桿。個(gè)人觀點(diǎn)僅供參考,可以看看相關(guān)標(biāo)準(zhǔn)!
APQP - Advanced Product Quality Planning, 產(chǎn)品質(zhì)量先期策劃 (0) 投訴