Storage and transportation automatic control system design in the port tank yard is introduced.

介绍了港口液碱罐区贮运自控系统的设计.

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A improved process ofp - amino - N , N - dimethylaniline applied caustic soda solution as materials was introduced.

阐述了采用液碱(苛性钠溶液)代替氨水生产对氨基 -N, N - 二甲基苯胺的方法.

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