n.頻繁；頻率

Accidents on that highway are happening with increasing frequency. 那條高速公路上車禍發(fā)生得越來越頻繁。

Accidents are happening with increasing frequency. 事故正在愈加頻繁地發(fā)生。

He wrote to both with tolerable frequency. 他和他們通信，相當(dāng)頻繁。

He varied the transmission frequency. 他變換了無線電傳送的頻率。

He tuned his radio to the police frequency. 他把無線電調(diào)到警方的頻率。

The pitch depends on the frequency. 音調(diào)的高低是由頻率決定的。

adj.高周波的；高頻率的

n.中頻

n.射頻；無線電頻率

可變頻率

adj.低周波的；低頻率的