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- double decomposition reation 复分解反应
- Study on the effect of salt on double decomposition reaction of brine and ammonium bicarbonate was investigated. 卤水和固体碳酸氢铵复分解反应得碳酸氢钠沉淀和氯化铵溶液,碳酸氢钠经煅烧得纯碱。
- Fluorapatite was prepared by adopting double decomposition method, and the properties were characterized by XRD, XPS and antibiotic testing. 采用复分解反应制备了氟磷灰石,对有、无锌离子的氟磷灰石进行结构和性能比较。
- The current preperation methods of strontinum carbonate from celesite are carbon reduction method and double decomposition method. 中国天青石资源十分丰富,但矿石品位低、杂质含量高,需经选矿除杂后才能作为生产碳酸锶的原料。
- It's a economical way to make compound fertilizer named Potassium Phosphate, Using carnallite and wet phosphoric acid by double decomposition reaction. 用光卤石和湿法磷酸通过复分解反应生产磷钾复合肥料是较经济的方法。
- The technology and mechanism of solution chemistry of preparation of strontium carbonate by double decomposition from celestite concentrate were investigated. 研究了天青石精矿复分解法制备碳酸锶的工艺及溶液化学作用机理。
- XIE Yong-fu,GAO Rui-hua.Preparation of strontium carbonate with celestite and salvolatile by double decomposition[J].Jiansu Chemical Industry,1995,23(2):15-17. [5]谢永福;高瑞华.;用碳酸铵和天青石复分解制碳酸锶[J]
- Two main section-evaporation and cooling crystallization was reconstructed in Double Decomposition Reaction Produce KNO3, and production of reconstruction anteroposterior was contrasted. 对复分解法生产硝酸钾工艺中的两个主要工段:蒸发、冷却结晶进行改造,并对改造前后的生产情况进行了对比。
- 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。
- Based on the double decomposition of potassium chloride and sodium nitrale,a new seperation method of potassium nitrate using sodium alkylsulphonate as a flotation agent was studied. 介绍了在氯化钾和硝酸钠的复分解反应的基础上,利用烷基磺酸钠为浮选剂分离硝酸钾产物的一种新方法。
- The research of produce potassium nitrate by using ammonium nitrate (NH 4NO 3) potassium chloride (KCl) as raw materials, the methodology was double decomposition reaction and non-circulation. 研究了以硝酸铵和氯化钾为原料复分解非循环生产硝酸钾的工艺；实验制得了农业级的硝酸钾。
- the direct double decomposition method 直接复分解法
- He is working double tides to finish his essay. 他日夜苦干，赶写他的文章。
- I do not realize it is a double feature. 我原先不知道这是双片连映。
- Double agents live in a perpetual state of fear. 两面派永远过着提心吊胆的生活。
- I want a double room with a view. 我要一间能看到风景的双人房间。
- He was so fat that he had a double chin. 他胖得有双下巴了。
- The carpet is too thick to double up. 这地毯太厚没法折叠。
- Is the material single width or double width? 这幅料子是单幅的还是双幅的？
- Reserve double room June fourth to tenth inclusive. 预订双人房间，六月四日至十日，共六晚，望订妥复电。
