鍛造圖紙中的符號（一）

Straightness - a condition where an element of a surface or an axis is a straight line. —直度：一個條件，一個面元素或軸是一條直線

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

—平整度:是條件，表面有所有的元素在一個平面

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

—圓度:描述條件對革命的表面(圓柱,圓錐,球)在所有點的表面相交的任何飛機

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

—圓柱度:描述了一個條件的旋轉面,使所有的點面距離相等,一個共同的旋轉軸

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.

—線輪廓度:是條件允許量相同的剖面變化,醚單邊或雙邊,沿著一條線元素的特征

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

—面輪廓度：是條件允許量相同的剖面變化，醚單邊或雙邊，上表面

All Around Symbol - indicating that a tolerance applies to surfaces all around the part. —周圍標志:表明公差適用于所有周圍的部分表面

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

—傾斜度:是表面，軸，或中線，這是從某一特定角度基準平面或軸

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:條件是表面，軸，或線，這是90度的基準平面或基準軸

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:一個表面，線，或軸，這是等距離的所有點，基準平面或軸