collapsiblebit活: live头: 5点就得动身 have to start before ...钻头: boring crown; bore bit; dril ...多钻头钻模: multiple jig平头钻头: countersinking bit; flat head bit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:活头钻头，即可在微信中查询翻译
