鍛造圖紙中的符號（二）

Position Tolerance - defines a zone within which the axis or center plane of a feature is permitted to vary from true (theoretically exact) position.

—位置公差:定義一個(gè)區(qū)域內(nèi)的軸或中心平面的一個(gè)特點(diǎn)是允許不同的真正的(理論上)位置

Concentricity - describes a condition in which two or more features , in any combination, have a common axis.

—同心度:描述在其中一個(gè)條件的2個(gè)或更多的功能，在任何組合，有一個(gè)共同的旋轉(zhuǎn)軸

Symmetry - is a condition in which a feature (or features) is symmetrically disposed about the center plane of a datum feature.

—對稱度:是一種狀況，其中一個(gè)功能（或功能）是處理有關(guān)對稱中心平面基準(zhǔn)特征

Runout - is the composite deviation from the desired form of a part surface of revolution through on full rotation (360 deg) of the part on a datum axis.

—跳動(dòng):是復(fù)合偏離理想形式的一部分表面上通過革命旋轉(zhuǎn)（360度）的一部分，在基準(zhǔn)軸

Total Runout - is the simultaneous composite control of all elements of a surface at all circular and profile measuring positions as the part is rotated through 360.

—全跳動(dòng):是同時(shí)復(fù)合控制所有表面元素在所有圓輪廓測量位置的部分是通過旋轉(zhuǎn)360

Maximum Material Condition (MMC) - is that condition of a part feature wherein it contains the maximum amount of
material within the stated limits of size. That is: minimum hole size and maximum shaft size.

—材料狀態(tài):是條件的一部分功能其中包含的金額材料在規(guī)定的極限尺寸。那就是：最小孔尺寸和軸尺寸

Least Material Condition (LMC) - implies that condition of a part feature of size wherein it contains the least (minimum) amount of material, examples, largest hole size and smallest shaft size. It is opposite to maximum material condition.

—最小材料狀態(tài):意味著條件的一部分功能的大小，其中也包含了最小（）的材料，例子，孔尺寸和最小軸徑。它的對面是材料狀態(tài)。

Regardless Of Feature Size (RFS) - the condition where the tolerance of form, runout or location must be met irrespective of where the feature lies within its size tolerance.

—不論大小的特征:不論大小的特征的情況下，形狀公差，跳動(dòng)或位置必須滿足，不論在哪里，它的特點(diǎn)是在其尺寸公差