我们称故障率为PPM,有些书上说应该是DPMO（每百万故障率）.我认为他们之间的差异不是很明显.我很惊奇这个公司的一些新员工认为称之为PPM不正确.我以前没看到过DPMO.这个文档看来是为PCB和PCBA设计的.关于这点,请查找相关书籍来参考并学习.
真辛苦,不知道你那专业词语是啥玩意
有什么语法错误?:when we saw fault units rate we call it PPM.Books s
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