fine pitch小: small; little; petty; minor模数: modulus; module; modulo; mod细: thin; slender径节: diametral pitch小模数齿轮: fine-pitch gear; micron gear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)细径节,即可在微信中查询翻译