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zmd248:這兩種材料容易水解,化學(xué)性能不好,周轉(zhuǎn)要快,可以試試先磨邊后拋光,或者在超聲波清洗這一道下下功夫,改一下超洗工藝 XKU=oI0\j (2019-09-29 16:07) !mnUdR|>(
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