PN junction isolation

例句：

1. 1.The device uses a PN junction isolation to prevent short circuits.
   该设备使用PN结隔离来防止短路。
2. 2.The researcher found that the PN junction isolation improved the device's performance.
   研究者发现PN结隔离提高了设备的性能。
3. 3.The isolation of PN junctions is crucial for the stability of the device.
   PN结的隔离对设备的稳定性至关重要。