| |||
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 |