久久91久久,91久久久久久久久久久久久,91精品国产91久久久久久丝袜,欧美亚洲国产精品久久高清,久久综合中文,成人久久久,亚洲精品成人久久

電火花線切割機(jī)按走絲速度可分為高速往復(fù)走絲電火花線切割機(jī)(Reciprocating type High Speed Wire cut Electrical Discharge Machining俗稱“快走絲”)、低速單向走絲電火花線切割機(jī)(Low Speed one-way walk Wire cut Electrical Discharge Machining俗稱“慢走絲”)和立式自旋轉(zhuǎn)電火花線切割機(jī)(Vertical Wire Electrical Discharge Machining machine tool With Rotation Wire)三類。高速走絲與低速走絲(或快走絲和慢走絲)的提法，是用電極絲的走絲速度來區(qū)分的。