feed dog

短语

传动卡爪

词形变化

feed dogs 复数 feed dogs

释义与例句

n.
  1. 1.

    On a sewing machine, the toothed mechanism that uses a forward, down, back, and up motion against the presser foot to advance the fabric through the machine evenly.

    商务 工程

词源

feed + corruption of cog.

来源：wiktionary