机械产品“三化”的经济效益分析华北工学院专科学校吴原生标准化、系列化、通用化通称为“三化”。在各种机器中，有相当多的零部件是相同的，将这些零部件加以标准化，并按尺寸不同加以系列化，则设计者毋须重复进行设计，即可从有关的标准中直接选用。通用化指系列之内... Analysis of the Economic Benefits of the “Threeizations” of Mechanical Products The standardization, serialization, and generalization of Wu Yuansheng’s standardization, serialization, and generalization of North China Institute of Technology are collectively referred to as “threeizations.” In a variety of machines, there are quite a few parts that are the same. To standardize these parts and serialize them according to their size, the designer does not need to repeat the design and can choose directly from the relevant standards. Generalized means within the series...