Wound with metalized polypropylene film as medium, metal coat as electrode, various outgoing modes and epoxy resin package.
金属化聚丙烯薄膜做介质，金属涂层作电极卷绕而成，多重引出方式环氧树脂包封。
Indistinct pattern are sometimes found on the wire electrode wound regularly in reciprocating travelling WEDM.
高速走丝电火花线切割加工过程中，电极丝有时会出现先有花斑后断丝的现象。
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