EXTR n. 挤压
- Adamason A N,Bloore E J,Carr A R.Basic Principles of Bayer Process Design[J].Extr Met of Aluminum,1963(1):23.
李小斌,刘祥民.烧结法处理高铝硅比矿石工艺的现状与发展[J].铝镁通讯,1999(3):17-19. - Divide into four stitch back muscle (take shape three muscle), three stitch back muscle (take shape two muscle), two stitch back muscle (take shape a muscle), Changing the difference of back muscle, only need to change different needle boards, press foot, it is extr-emely convenient to operate.
其中分为四针背筋(成形三根筋)、三针背筋(成形二根筋)、二针背筋(成形一根筋),转换背筋之分,只需更换不同的针板、压脚即可,操作很是方便。
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