upgrading of labor中文什么意思
提高劳动技能
相关词汇
- upgrading of boiler weld 什么意思
- upgrading of bridge and tunnel 什么意思
- upgrading of human resources 什么意思
- upgrading of industies 什么意思
- upgrading of industries 什么意思
- upgrading of mineral 什么意思
- upgrading of outmoded enterprises 什么意思
- upgrading of telecom infrastructure 什么意思
- upgrading of the processing trade 什么意思
- upgrading proposal 什么意思
