pitch cylinder节: joint; knob; node节圆柱: pitch block; pitch cylinder圆柱面: cylinder face; cylindric surface; cylindrical face; cylindrical surface; cylndrical surface齿顶圆柱面: ticylinder齿根圆柱面: root cylinder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:节圆柱面，即可在微信中查询翻译
