of amelioration meaning in English

演进的

Study of amelioration to lateritic red soil by copolymer of humic acids grafted vinyl monomer
腐植酸接枝共聚物对赤红壤改良的研究
Studies on polymeric soil structure amendments . study of amelioration to lateritic red soil by starch - grafted copolymer
淀粉接枝共聚物改良赤红壤的研究
As the main part of the essay the fourth one which offers the theory that belief of government by law is the sociological premise discusses the ways of amelioration of chinese system of delisting in details
第四章是本文的中心，针对第三章的原因探讨，本章指出树立证券市场法治信仰是完善我国退市机制的思想前提，并进一步论述了完善我国退市机制的法律具体途径。
The data of the output power and the refrigeration current of optical source in the temperature fluctuation are acquired . a method of adjusting the amplificatory multiple for stabilizing the output power of optical source is found . it also analyzes the error of the experimental data and presents the plan of amelioration
通过实验获得了光源出纤功率、制冷电流随温度变化的数据，找到了调放大倍数这一稳定光源出纤功率的办法，并分析了实验误差，提出了改进意见。