重复取样表明，在同一城市饮用水中铝的浓度随时间而变化，一般是混凝剂投加量越高残留铝浓度越高。
The repeated sampling showed that the aluminum concentration in the same city varies with time. In general, the more the coagulant dosage, the high residual concentration of aluminum is.
本地源数据首先以一个原始采样速率采样，然后以等于将所述数据发送到该远端源的帧速率的第一重复取样速率重复取样。
Local source data is first sampled at an original sampling rate and then resampled at a first resampling rate which is equal to the framing rate for transmitting said data to the remote source.
电缆式重复地层测试器(RFT)主要用于裸眼井测量储层压力及地层流体取样。
Wireline repeat formation tester (RFT) is mainly used for reservoir pressure measuring and reservoir fluids sampling.
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