发布时间:2025-02-01 10:00:54
有几种工艺:
1.在纸上刻好花纹,贴在玻璃背面,然后整面涂上蜡,再把纸揭掉,空出花纹,再涂上氢氟酸,把花纹处的玻璃腐蚀掉一定深度.
2.用喷沙工艺,把花纹"磨"出来.
3.用合金或钻石刀刻划出花纹.
花纹做好后,再覆上反光涂层,镜子就做好了,从正面看,就有很立体的花纹.
一片30米长的梯梁波纹管直径80mm钢绞线直径1524mm怎么计算用多少压浆料
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