steep-pitch thread大: big; large螺距: pitch; flight lead; pitch of ...螺纹: screw thread; flight; helica ...大螺距螺钉: coarse pitch screw; coarse-pitch screw大螺距螺纹切削装置: coarse threading attachment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:大螺距螺纹，即可在微信中查询翻译
