针对断面尺寸偏离图纸公称尺寸的情况和噪声的存在，给出了识别正确性的理论分析。
The accuracy of the method is discussed in theory, given the deviation of profile dimensions from their standard dimension and the existence of noise.
接线端应该设计到位才能保证不会无缘无故的被塞进管子内，或者，采用相同的公称尺寸，这样一种方式才能确保接线端自由出口处不会受到限制。
A terminal shall be so designed that it cannot be inadvertently pushed onto a pipe or fitting of the same nominal size in such a manner that the terminal outlet free area is restricted.
为优化装配系统中公差链的公差值，建立了几何尺寸公差的优化模型，并提出公差的分层优化设计算法：第一层，解决设计公称值居中的优化问题；
In order to optimize tolerance values for an assembly system, a model for geometric dimension tolerance optimization was established and an algorithm for optimal tolerance design was proposed.
为优化装配系统中公差链的公差值，建立了几何尺寸公差的优化模型，并提出公差的分层优化设计算法：第一层，解决设计公称值居中的优化问题；
In order to optimize tolerance values for an assembly system, a model for geometric dimension tolerance optimization was established and an algorithm for optimal tolerance design was proposed.
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