锻造图纸中的符号（一）

Straightness - a condition where an element of a surface or an axis is a straight line. —直度：一个条件，一个面元素或轴是一条直线

Flatness - is the condition of a surface having all elements in one plane.

—平整度:是条件，表面有所有的元素在一个平面

Roundness - describes the condition on a surface of revolution (cylinder, cone, sphere) where all points of the surface intersected by any plane.  

—圆度:描述条件对革命的表面(圆柱,圆锥,球)在所有点的表面相交的任何飞机

Cylindricity - describes a condition of a surface of revolution in which all points of a surface are equidistant from a common axis.

—圆柱度:描述了一个条件的旋转面,使所有的点面距离相等,一个共同的旋转轴

Profile of a Line - is the condition permitting a uniform amount of profile variation, ether unilaterally or bilaterally, along a line element of a feature.

—线轮廓度:是条件允许量相同的剖面变化,醚单边或双边,沿着一条线元素的特征

Profile of a Surface - is the condition permitting a uniform amount of profile variation, ether unilaterally or bilaterally, on a surface.

—面轮廓度：是条件允许量相同的剖面变化，醚单边或双边，上表面

All Around Symbol - indicating that a tolerance applies to surfaces all around the part. —周围标志:表明公差适用于所有周围的部分表面

Angularity - is the condition of a surface, axis, or centerplane, which is at a specified angle from a datum plane or axis.

—倾斜度:是表面，轴，或中线，这是从某一特定角度基准平面或轴

Perpendicularity - is the condition of a surface, axis, or line, which is 90 deg. From a datum plane or a datum axis.

—垂直度:条件是表面，轴，或线，这是90度的基准平面或基准轴

Parallelism - is the condition of a surface, line, or axis, which is equidistant at all points from a datum plane or axis.

—平行度:一个表面，线，或轴，这是等距离的所有点，基准平面或轴