空间积分抽样相位理论分析为消减欠采样产生的折叠混淆效应提供了理论依据。
Phase theory analysis of spatial integral sampling provide theoretical basis for under sampling aliasing reduction.
因此，如果在某个地区内只在某单块抽样小区内采样，那末就可能得到某种较为含糊的结果。
Thus setting up a single sample plot in an area can produce some rather bewildering result.
CTR采用单点随机抽样、全程录像监控的科学监播方式，在保证监播实施过程公正性的同时，也确保了监播采样的完整性。
CTR applies the scientific monitoring method combining random sampling and whole-process video recording to ensure impartiality of monitoring process and completeness of sampling.
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