signal strength

例句：

1. 1. The signal strength is weak, so we need to increase the power.
   信号强度弱，所以我们需要增加功率。
2. 2. The signal strength is critical for communication.
   信号强度对于通信至关重要。
3. 3. The signal strength can be measured using a meter.
   信号强度可以通过仪表测量。