单元式 | |
tech. | unit type; unit system; direct access type |
保护 | |
gen. | safeguard; preservation |
environ. | conservation; preserve |
hydroel.st. | protection; conservation |
law | guardianship |
| |||
unit type; unit system | |||
| |||
direct access type |
单元式: 130 phrases in 29 subjects |