vacuum tube tester

例句：

1. 1.This vacuum tube tester can detect the quality of the vacuum tubes in your circuit board.
   这个真空管测试仪可以检测你电路板上的真空管的质量。
2. 2. The engineer used the vacuum tube tester to diagnose the problem with the electronic device.
   工程师使用真空管测试仪诊断电子设备的问题。
3. 3. The vacuum tube tester is a crucial tool for testing and calibrating electronic components.
   真空管测试仪是测试和校准电子元件的关键工具。