Experiments on the air infiltration by tracer gas method and obtains the range of air infiltration rate per unit length of the crack.
采用示踪气体法对塑钢窗冷风渗透量进行了实验，得出了塑钢窗单位长度渗风量的范围。
It supplied the soil permeability unit grouping figure, sampling pattern and mathematical model of sampling pattern of total infiltration qua...
为渠道理论输水损失水量计算提供了土壤透水性单元聚类图、模式样本及入渗总水量的模式样本的数学模型。
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