agricultural melioration 农业土壤改良
soil melioration 土壤改良
hydro-melioration 水利土壤改良
melioration of land 国土改良
eco-melioration 生态化改造
land melioration 土地改良
Melioration Theory 改善理论
The melioration of saline and alkali soils is a difficult topic faced in the world. For long time, in the study filed of saline and alkali soil ecology, the research has been focused on plant physiology and bio-ecology.
盐渍化土壤改良与利用是世界范围内所面临的难题，长期以来在盐渍化土壤生态学研究领域内，人们以实现生物改良与利用为主要目标，开展了许多盐生植物生理生态的科学研究。
参考来源 - 盐渍化极端生态环境条件下土壤微生物生态及放线菌资源The adulteration and melioration experiment of the materials prepared by acid-treating method were studied, the results proved that the material treated had an excellent steady property, but less reversible capacity.
本论文对由酸处理法合成的Li_xMnO_2材料进行了掺杂改性实验，结果表明，改性后的材料虽然循环性能有显著改善，但比容量会有所减少。
参考来源 - 锂离子电池正极材料层状Li·2,447,543篇论文数据，部分数据来源于NoteExpress
同义词： amelioration betterment
同义词： improvement
以上来源于: WordNet
N the act or an instance of improving or the state of being improved 改善
Structure vibration control is of great importance for the melioration of spacecraft dynamic property.
结构系统的振动控制是改善航天器动态特性的重要途径。
Dialysis all the groups the melioration of defect severity of clinical neural function, hemorrheology and TCD changes and evaluated its effect and safety.
分析各组临床神经功能缺损程度评分及TCD、血流变的改善情况，评价其疗效及安全性。
Aimed at the structure characteristic of Jilin melioration flesh cattle, mainly described the key technique of Jilin melioration flesh cattle garment leather.
针对吉林改良优质肉牛皮的组织结构特点，阐述了肉牛皮服装革工艺的技术关键。
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