RESULTS: There is significant differentiation in dissolution parameter of each pharmaceutical factory(P < 0 . 01 ) .

结果：各厂家溶出参数之间有极显著性差异（P＜0．01）。

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P. is re-using a 400m2 old, abandoned East German-build Bauhaus munitions factory that was built in the early 1950s.

坐落于北京的东北部、其前身是由东德人在1950年代初所建成400平方米老军工厂区、后来一直被抛弃。

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We initiated active calcium carbonate in 1953. In 1959, we started to supply domestic medical factory. Our product is with P.

1953年在国内首创生产活性碳酸钙，1959年在全国首先开始生产医药用碳酸钙为全国药厂配套。

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