According to product quality requirements and tolerance regulations, a model of the theory of unit manufacturing quality control is obtained.

根据产品质量要求和公差规定，建立了单元制造质量控制理论的模型。

During machine design, tolerance of unit ring in assembly dimension chain is usually determined by using either equal tolerance or equal accuracy method.

在机械设计中，装配尺寸链的组成环公差，一般是采用等公差法或等精度法来确定。

It has a simple programmable control unit that can set target weight and tolerance to feed an increment of material.

它有一个简单的可编程控制装置，可以设定目标重量和控制原料的分配。