的意思 lowest usable frequency

1. The lowest usable frequency for long-distance radio communication is typically around 3 to 30 MHz.
长距离无线电通信的最低可用频率通常在3到30兆赫茨左右。

2. It is important to determine the lowest usable frequency for your specific location in order to optimize communication efficiency.
确定您特定位置的最低可用频率对于优化通信效率至关重要。

3. The radio operator adjusted the equipment to the lowest usable frequency to establish a clear connection with the base station.
电台操作员将设备调整到最低可用频率，以与基站建立清晰的连接。

4. During times of high solar activity, the lowest usable frequency may shift higher due to increased ionization in the atmosphere.
在太阳活动高峰期间，由于大气中电离增加，最低可用频率可能会向更高频率转移。

5. The military uses the lowest usable frequency for secure and reliable communication in remote regions.
军方在偏远地区使用最低可用频率进行安全可靠的通信。

6. It is recommended to regularly monitor the lowest usable frequency range to adapt to changing atmospheric conditions.
建议定期监测最低可用频率范围，以适应不断变化的大气条件。