transistor characteristics curve tracer

例句：

1. 1. The transistor characteristics curve tracer is essential for diagnosing the circuit's performance.
   晶体管特性曲线跟踪器对于诊断电路性能至关重要。
2. 2. The engineer used the transistor characteristics curve tracer to identify the root cause of the problem.
   工程师使用晶体管特性曲线跟踪器来识别问题的根源。
3. 3. The manufacturer provided a detailed guide on how to use the transistor characteristics curvetracer for troubleshooting.
   制造商提供了一份详细的指南，指导如何使用晶体管特性曲线跟踪器进行故障排查。