basic rack tooth profile of fine-pitch cylindrical worm小: small; little; petty; minor模数: modulus; module; modulo; mod圆柱: column蜗杆: worm; endless screw基本: basic; fundamental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:小模数圆柱蜗杆基本齿廓,即可在微信中查询翻译