normal arc tooth thickness正交: orthogonal; perpendicular; n ...截面: section; cross section; cros ...弧线: arc齿: tooth厚: thick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:正交截面弧线齿厚，即可在微信中查询翻译
