vacuumtube
常见例句
- Transistors have many advantages over the old-fashioned vacuumtube valves.
与老式真空管相比,晶体管具有许多优点。 - many advantages over the old-fashioned vacuumtube valves.
与老式真空管相比，晶体管具有许多优点。 - vacuumtube rectifier
电子管整流器 - oxide cathode vacuumtube
氧化物阴极电子管 返回 vacuumtube