cutoff frequency的用法和样例：
例句
- The width of the rectangular cavity was found to af-fect the cutoff frequency of the device most significantly, while the length of the cavity has least influence.
长方形共振腔的宽度影响元件之微波截止频率甚为显著，然而共振腔长度对元件的影响则较不明显。
词汇搭配
- cut off 切断
