Their instruments detected very faint radiowaves at a frequency of 3 kilohertz.
他们的仪器检测到一个3千赫的微弱无线电波。
They sat aside 100 channels, each 200 kilohertz wide.
他们在旁边坐了100种渠道, 各200千赫宽.
期刊摘选
Their instruments detected very faint radiowaves at a frequency of 3 kilohertz.
他们的仪器检测到一个3千赫的微弱无线电波。
柯林斯例句