| |||
open-hole | |||
open holes | |||
mounting hole | |||
fixing hole; open hole | |||
| |||
mounting hole |
安装孔 : 15 phrases in 8 subjects |
Automobiles | 1 |
Computer numerical control | 1 |
Ecology | 1 |
Electric machinery | 2 |
Electronics | 4 |
Information technology | 1 |
Space | 1 |
Technology | 4 |