amelioration
短語(yǔ)詞組
- land amelioration 土地改良
- continuous amelioration 持續(xù)改進(jìn)
- grassland amelioration 草地改良
- amelioration design 改進(jìn)設(shè)計(jì)
- quality amelioration 質(zhì)量改進(jìn)
- amelioration operator 改進(jìn)算子
- amelioration efficiency 改良傚果
- amelioration degree 改善程度
- cultivational amelioration 耕作土壤改良 返回 amelioration