The principle of potassium nitrate production with double decomposition reaction, in four-step circulation and three-step circulation is introduced in the paper.

N-guanylurea dinitramide ( GUDN) was synthesized with N-guanylurea hydrochloride as primary substance by hydrolysis and double decomposition reaction in turn and the overall yield of GUDN is79%.

以盐酸脒基脲为原料，通过水解、复分解反应，合成了N-脒基脲二硝酰胺盐（GUDN），总收率可达79%。

Manufacturing the Barium Salts, as well Thiourea and Sodium Hydrosulfide by the Double Decomposition Reaction of Barium sulfide and Hydrochloric Acid

硫化钡&盐酸复分解法制钡盐、硫脲、硫氢化钠

The double decomposition reaction between calcium carbonate and ammonium nitrate produces volatile gases such as NH 3, H 2O and CO 2 and the decomposition rate is proportional to the calcium carbonate content, temperature and time.

碳酸钙同硝酸铵发生复分解反应放出NH3、H2O和CO2气体，反应程度与碳酸钙的含量、温度和时间成正比。

Methods Double decomposition reaction was used to prepare phosphonomycin silver and disc agar diffusion test was used to compare the anti-microbial activities of phosphonomycin silver with those of sulfadiazine silver and calcium phosphonomycin.

方法：采用复分解法制备磷霉素银，并经体外抑菌试验比较了磷霉素银与磺胺嘧啶银和磷霉素钙的抗菌活性。

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。

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。

Study of Liquid-Liquid Double Decomposition Reaction Process in the Production of Potassium Sulfate from Ferrous Sulfate and Potassium Chloride

硫酸亚铁与氯化钾制备硫酸钾的液-液复分解反应工艺研究

Synthesis of Zinc Dialkyl Dithiophosphates by Double Decomposition Reaction

复分解反应合成二烷基二硫代磷酸锌

Producing thiourea and sodium hydrosulfide along with barium sulfate in double decomposition reaction of barium sulfide and sulphuric acid

复分解法生产硫酸钡联产硫脲、硫氢化钠的研究

New Process of Manufacturing Potassium Sulfate by Four-step-circulation Method of Double Decomposition Reaction

复分解四步循环法制取硫酸钾新工艺

Introduce process calculation, process flow sheet, equipment erection and effect of production application of screw plate heat exchanger used in ammonium chloride production in double decomposition reaction production of potassium nitride and ammonium chloride process.

介绍复分解法生产硝酸钾与氯化铵工艺中，螺旋板换热器应用于氯化铵生产的工艺计算，工艺流程，设备安装及生产应用效果。

The thickness of the litter layer under spruce fir was greater, the decomposition intensity was bigger, and the organic matter, total nitrogen, available phosphorus were higher, comparing with that under the pure Larix forest.

云冷杉林的枯枝落叶层的厚度和分解状况优于落叶松纯林，且有机质、全氮、速效磷含量高；

This article discusses the decomposition of energy intensity per GDP reduction by 20% all over the country in the 11th Five-year Plan period, and offers a model for decomposition and a calculation method.

本文针对近期进行的十一五期间单位GDP能耗降低20%的目标分解工作进行探讨，并提出了分解模型及分解计算方法。

Index Decomposition of Energy Intensity Changes:& Evidence from Xinjiang

能源强度变动的指数分解研究&基于新疆数据的实证分析

Effects of cover and no-tillage on soil cellulose-decomposing bacterium population and cellulose decomposition intensity

免耕及覆盖对土壤纤维素分解强度和纤维素分解菌的影响

The optimal decomposition of the intensity modulated mapping matrix for IMRT is studied in this paper.

研究肿瘤放射治疗的调强映射矩阵的最优分解问题。

While inefficient, this anaerobic decomposition can unlock quite a bit of heat.

虽然厌氧分解效率很低，但这个过程仍会释放大量热量。

The Major natural sources of atmospheric methane include enteric fermentation in ruminants and some insects, and the anaerobic decomposition of organic matter in waterlogged soils.

甲烷的主要自然源包括反刍动物和一些昆虫的肠发酵及淹水土壤的有机物的厌氧分解。

The order of the anaerobic decomposition of the sodium dithionite in the alkaline solution is 1.5 order.

在碱性溶液中，连二亚硫酸钠的分解反应级数为1.5级。

These processes are controlled by anaerobic decomposition of soil organic matter and respiration and excretion of rice roots, relating to soil proper-ties as well.

其转化主要受土壤有机质嫌气分解和水稻根系呼吸及分泌作用的制约，并与土壤基本性质密切相关。