circular permutation

Recycling system construction effect on urban environment and resources circulation;

再生资源回收利用体系建设对城市环境和资源循环利用的作用

Study on sludge reduction by aerobic/anaerobic alternation and circulation methods;

好氧/厌氧交替与循环工艺用于污泥减量化研究

Allocation,circulation and purifying effect of nickel in synthetic wastewater in Avicennia marina simulated wetland system;

模拟分析白骨壤湿地系统中Ni的分配循环及其净化效果

Working Cycle Analysis of the Engine Retarder;

车用发动机缓速器工作循环的理论分析

The problems revealed during the commissioning of the 75t/h cycle-fluidized-bed-boiler and the improvements;

75t/h循环流化床锅炉试运行中暴露出的问题及改进方法

The Application of Refrigerant Recovery, Recycle and Regenerate Technique in Production;

制冷剂的回收、循环和再生技术在生产中的应用

Technical innovation of recycled-water system;

橡胶轮胎生产循环水系统的技术改造

The different addition metal,temperature,pressure,the dosage of sodium hydroxide,catalyst recycle times were investigated in hydrogenation of o-CNB to DHB.

通过对骨架镍催化剂添加第三金属M(Mo,Ti,Cr)制备改性骨架镍催化剂,并采用间歇加压釜式反应器对改性骨架镍催化剂进行活性评价,考察了不同添加金属、反应压力、温度、碱量、催化剂循环套用次数等工艺条件对催化加氢法制备2,2'-二氯氢化偶氮苯的影响。