The system is capable of sampling, conversion and various calculations in both time and frequency domains.

可完成数据的采集、转换，并进行时间域和频率域的多种运算。

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The sampling velocity is not important in many testing system, but it may be re-quired to output the testing result real time.

许多检测系统对采样速率的要求不是很高，但需要实时输出检测结果。

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If, as in sampling or digital systems, some elemental equations are defined or used only at discrete points in time, a discrete-time system is the result.

而假如，在采样问题或数字系统中常见这种情况，有些基础方程仅定义于，或仅能应用于离散的时间点上，这就导致了离散时间系统。

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League tables should be scrapped, they say, and there should be a system of "sampling" to enable the government to measure how pupils are achieving over time.

BBC: Schools may try to boycott Sats