非实际的假设的
Non-actual hypothetical
以上为机器翻译结果，长、整句建议使用 人工翻译 。
传统的统计过程控制理论是基于正态分布这个基本假设的，而在实际生产过程中大量非正态过程传统SPC技术会失效。
Traditional SPC theory is based on a fundamental assumption that the process data are normal. However, in many conditions the process data are non-normal which makes traditional SPC theory invalid.
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