This paper introduces the method of preparing high pure lithium carbonate by double decomposition method with industrial lithium hydroxide and ammonium carbonate as the raws materials.
以工业氢氧化锂和分析纯碳酸铵为原料，采用复分解法合成高纯碳酸锂。
This paper introduces the method of preparing high-purity magnesium hydroxide by double decomposition method with industrial magnesium chloride and barium hydrosulfide as the raws materials.
以工业氯化镁和硫氢化钡为原料，采用复分解法合成高纯氢氧化镁。
Under the effect of regional tectonics, there develop many raws drape anticline and active fault in the front of mountain, and they have especial motion fashion.
由于受区域构造长期作用的影响，在北天山山前地区逐步发育形成了多排褶皱背斜及活动断裂，且运动方式具有独特性。
Under the effect of regional tectonics, there develop many raws drape anticline and active fault in the front of mountain, and they have especial motion fashion.
由于受区域构造长期作用的影响，在北天山山前地区逐步发育形成了多排褶皱背斜及活动断裂，且运动方式具有独特性。
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