[计] 频偏

frequency departure的用法和样例：

例句

The limited sensitivity of present pulsar surveys and the greater frequency drift make the more distant pulsars difficult to observe.目前脉冲星普查的有限探测灵敏度和大的频率漂移，使我们难以观测到更遥远的脉冲星。

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amended subject

as wide as the poles asunder