Spectral data sources of sandy land included single surface feature and composite surface feature, and their spectral data were measured by different sampling methods.
沙化土地光谱数据源分为单一地物类型级和复合地物类型级两种，野外测量时分别采取不同的采样方法。
2
The property of the composite membranes characterized by sampling and detecting airborne microorganism and E. coli phagocyte in simulation room.
通过空气中细菌采样以及大肠杆菌噬菌体模拟采样实验来表征壳聚糖复合膜作为采样用膜的特性。
3
The sampling intervals range from 1-hr averages of continuous monitoring to monthly and quarterly composite.