melioration
短語詞組
- agricultural melioration 辳業(yè)土壤改良
- soil melioration 土壤改良
- land melioration 土地改良
- idioplasm melioration 種質(zhì)改良
- Melioration Theory 改善理論
- channel melioration 渠道改進
- coefficient melioration 系數(shù)改進
- melioration measurement 改良措施 返回 melioration