 |
| |||
| bellows; depression tube | |||
| tube | |||
| electron tube | |||
| thermionic tube (valve) | |||
| vacuum tube; valve | |||
| vacutainer | |||
| vacuum pipe; vacuum-tube (valve); vacuum valve | |||
| radiotron | |||
| bulb | |||
| evacuated tube; vacuum line (线); vacuum-tube; vacuum tubing; vacuum | |||
| |||
| bulb | |||
| |||
| vacuum piping | |||
| |||
| thermionic valve | |||
| |||
| vacuum tube | |||
| |||
| vacuum tube | |||
| 真空管: 276 phrases in 33 subjects |