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在工作中我们发现,用塑料薄膜袋封装的颗粒冲剂有两种现象:一种袋内有空气,有的甚至鼓鼓胀胀的。这是因为没有将袋内空气排
In the work, we found that there are two phenomena in the particle granules encapsulated with plastic film bags: there are air in one kind of bag, and some even swell. This is because there is no air in the bag