There is a practical limit to reducing bandwidth since very long - term measurements become susceptible to other errors, such as time and temperature drift.

减小带宽时有一个实际的限制，如果测量时间太长，测量就容易受到时间和温度漂移等其它误差的影响。

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This drift makes the odom frame useless as a long-term global reference.

这种移动使得odom坐标系不能作为长期的全局参考。

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The study found that there are still a long-term polar drift and cycle of about 30 years of long-period oscillation.

经研究，发现地极还存在长期的漂移和周期约30年的长周期摆动。

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Labour seats have, on average, 6, 000 fewer electors than Tory ones because of the long-term drift of population from the cities to the shire counties and the leafy suburbs.

ECONOMIST: Bagehot

But the NUS is concerned there is a long-term drift towards placing entry charges on students - following the precedent set by tuition fees - and has supported an early-day motion in the House of Commons declaring opposition to top-up fees, signed by 38 MPs.

BBC: Students want ban on 'top-up fees'