应用污染几率原则，选择在沿岸地区最大污染几率的上风方位设立大气采样点。
Based on the principle of the pollution probability, the atmospheric sampling station was set up on the coastal area of upstream wind side where the pollution probability is the highest.
先从滤波器和信号的频域特性出发给出了滤波器在频域的采样率匹配原则。
According to the frequency domain character of the filter and signal, the sampling rate matching principle of the filter in frequency domain is given in the first part of the paper.
主要论述了在煤流中采样使用的采样机的选择和验收中的一些基本的原则。
Following article mainly discuss some basic principles of how to choose, check and accept the sampling machine for coal flow sampling.
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