1. 采集：3.3 土壤电荷零点(PZC)实验3.5 土壤阳离子交换(CEC)实验土壤试样的采集(sampling)是指从所研究土壤中采取少量样本作为原始试样. 原始试样经加工处理后用于分析,其分析结果被视作反映所研究土壤的代表性情况. 因此所采集的试样应具有高度的代表性,

noun

1. (statistics) the selection of a suitable sample for study

2. measurement at regular intervals of the amplitude of a varying waveform (in order to convert it to digital form)

3. items selected at random from a population and used to test hypotheses about the population

Synonym: sample distributionsample