arm of ratchet棘轮: notch wheel; clik pulley; cl ...臂: arm棘轮: [机械工程] notch wheel; clik pulley; clickwork; paw wheel; ratchet; retchet wheel触轮臂: trolley posts地轮臂: bogie arm; bogiearm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:棘轮臂，即可在微信中查询翻译
