friction ratchet摩擦: rub; chafe棘轮: notch wheel; clik pulley; cl ...机构: mechanism摩擦棘轮: friction ratchet gear; friction ratchet wheel棘轮棘轮机构: ratchet下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:摩擦棘轮机构，即可在微信中查询翻译
