凡五金冲压,即用冲床及模将不钢、铁,铜板及异性斫裂,有形尺度之事,五金冲压于船空船天、车、船舶、机械、化工之类甚遍,于今业务渐为一先,或有斜破,则有取乎?
其欲减成本,则于采买卷宽上下,于任使之前,尽取不加价者,于下尺尽择所宜,于铜印裁制后,不须两用,然后减削;其功用,用之既成,则减削二次,用之既成,当务用者,当务用之,当务用之,当务用之,当务用也。
二十二材厚愆,凡范畴登庸,当先择良器,娓娓。
使板形便,不特作沿板散不均,或可得而善,削试模调之数,然后缩短产期,益生率;
这四曰:无高贾之功,及称功之端,尽择今量车之用,厚其质,台其续,库为便,若冷轧板之机,即其引也,故令於物者尽其贾,而又其厚者,又非其贾也。
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