最小的控制界优化数学模型，最后给出主要研究过程、最优控制下限的数学表达式及其适用条件。
Major parts of the researching process, the formula for the optical control limits and the application condi.
容许的零件最大尺寸和最小尺寸即为该零件尺寸的上下限值，零件的实际尺寸必须在上下限值之间。
The maximum and minimum sizes in part dimensions that are acceptable are limits between which the actual part dimension must fall.
最小流量是水表在规定误差内使用的下限流量。低于最小流量时水表不能准确计量。
The Mix flux is the permitted Mix flux for the meter, if the flux is lower than this number, the meter will not to account correctly.
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