过渡配合transition fit
基孔制hole-basic system of fits
基轴制shaft-basic system of fits
间隙clearance
形状公差tolerance in form, form tolerance 直线度straightness
平面度flatness
圆度roundness
圆柱度cylindricity
线轮廓度profile of any line
面轮廓度profile of any plane
位置公差tolerance in position, position tolerances 平行度 parallelism
齿轮gear
圆柱齿轮cylindrical gear
正齿轮spur gear
斜齿轮spiral gear
轮齿gear tooth
节圆pitch circle
齿顶圆addendum circle, outside circle
齿根圆root circle, addendum circle
模数modulus