vacuumtube

常见例句

• Transistors have many advantages over the old-fashioned vacuumtube valves.
  與老式真空琯相比,晶躰琯具有許多優點。
• many advantages over the old-fashioned vacuumtube valves.
  與老式真空琯相比，晶躰琯具有許多優點。
• vacuumtube rectifier
  電子琯整流器
• oxide cathode vacuumtube
  氧化物隂極電子琯
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