二甲醚的生产方法比较及市场预测--维普资讯网 关键词: 二甲醚 生产方法比较 市场预测 工艺探讨[gap=774]Key words: Dimethylether;manufacture method compared;market forecast;technics study
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硫酸钾 是比较重要的钾肥品种，其生产方法比较多。
Potassium sulfate is an important fertilizer. There are many production method.
硫酸钾是比较重要的高质量钾肥品种，其生产方法比较多。
The potassium sulfate is an important fertilizer. There are many manners about the product's process.
也正是由于有了这种智力手段，才有可能对各种生产方法的效用进行量化的比较。
It is the mental device that provides the opportunity to compare degrees in the usefulness of various methods of production.
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