| |||
开-闭的井关 | |||
开闭; 开启-闭合 | |||
开一关的 |
open- closed: 31 phrases in 13 subjects |
Animal husbandry | 1 |
Automobiles | 5 |
Earth sciences | 5 |
Electricity | 3 |
Electronics | 1 |
General | 2 |
Genetics | 1 |
Geophysics | 2 |
International trade | 1 |
Logistics | 1 |
Plastics | 4 |
Polo | 1 |
Technology | 4 |