bound button hole是什么意思

网络释义

1)bound button hole,滚眼2)welt buttonhole,滚边扣眼，滚眼3)indented cylinder,窝眼滚筒4)piped buttonhole,滚边钮眼5)pipe button hole,滚扣眼6)eye roll sign,眼球滚动症

5XW-5 indented cylinder separator was designed.

研制了5XW-5型窝眼滚筒分选机,介绍了基本结构和工作过程。