long wave length cutoff

例句：

1. 1.The radio signal was cut off at the long wavelength cutoff.
   无线电信号在长波长截止处被切断。
2. 2. The satellite's communication system is designed to operate within the long wavelength cutoff.
   卫星通信系统设计为在长波长截止内运行。
3. 3.The research team used a long wavelength cutoff to study the behavior of the molecules.
   研究小组使用长波长截止来研究分子的行为。