helical tooth螺线: spiral; spire; helix; helica ...齿: tooth螺线: spiral; spire; helix (旋); helical; spiral curve摆线齿: cycloid tooth; cycloidal teeth; cycloidal tooth蜗线齿: spiral teeth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:螺线齿，即可在微信中查询翻译
