. . New seven quality control techniques, also called the seven new quality control tools, its main function is to use a more convenient way to solve some management problems, and the original "old" quality control methods compared, it is mainly used in middle and senior management, and the old seven methods are used in concrete and practical work.
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Different sampling methods in quality control of raw materials of biological products were compared in order to choose the reasonable sampling method.
当选取正确合理的抽样方法后 ，使抽样检验的工作量大大减少。
Compared with traditional analogue mapping, digital mapping has more quality control pivotai points, and its contents and methods are more complex.
和传统的模拟测图相比，数字测图的质量控制关键点更多、内容和方法更为复杂。
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