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| mechanical latch; mechanical locks | |||
| mechanical lock | |||
| 机械锁: 32 phrases in 10 subjects |
| Automobiles | 1 |
| Communications | 1 |
| Electronics | 5 |
| General | 1 |
| Metallurgy | 7 |
| Nuclear and fusion power | 1 |
| Oil / petroleum | 3 |
| Plastics | 1 |
| Space | 4 |
| Technology | 8 |
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