基: base; foundation圓: round; circular; spherical基圓柱: base cylinder基圓錐: base cone初基圓胞: primitive unit cell基圓半徑: base radius; radius of base circle基圓測量: base circle measurement基圓齒厚: base circular thickness基圓齒距: base pitch; base-piston基圓導程角: base lead angle基圓節(jié)距: base pitch基圓螺旋角: base iral angle; base spiral angle基圓螺旋線: base helix基圓誤差: grundkreisfehler base circle error基圓壓力角: pressure angle of base circle基圓直徑: base circle diameter (bcd); base diameter基圓柱面: base cylinder投影基圓: primitive circle凸輪的基圓: base circle of cam凸輪基圓: cam base circle校核基圓: circle of correction端面基圓齒厚: transverse base thickness基圓柱螺旋機: base helix基圓柱螺旋角: base helix angle; base helix engle基圓柱法面齒厚: normal base thickness