基: base; foundation圆: round; circular; spherical基圆柱: base cylinder基圆锥: base cone初基圆胞: primitive unit cell基圆半径: base radius; radius of base circle基圆测量: base circle measurement基圆齿厚: base circular thickness基圆齿距: base pitch; base-piston基圆导程角: base lead angle基圆节距: base pitch基圆螺旋角: base iral angle; base spiral angle基圆螺旋线: base helix基圆误差: grundkreisfehler base circle error基圆压力角: pressure angle of base circle基圆直径: base circle diameter (bcd); base diameter基圆柱面: base cylinder投影基圆: primitive circle凸轮的基圆: base circle of cam凸轮基圆: cam base circle校核基圆: circle of correction端面基圆齿厚: transverse base thickness基圆柱螺旋机: base helix基圆柱螺旋角: base helix angle; base helix engle基圆柱法面齿厚: normal base thickness