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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