improvementn.改进;改善
improvement countermeasures改良措施
improvement of the strength实力提升
Improvement of meat quality肉品质的改良
Improvement and optimization改进与优化
improvement by covering soil包边改良
improvement trade for export[经] 加工出口贸易
improvement of water circuit水路改进
Improvement on the technique技术改进
improvement of the local SOA改进局部安全工作区