The relation of the propagation error after spatial analysis such as arithmetic operation and logic overlay could be attained easily at the foundation of above.
以此为基础可以很快地导出基于确定的算术运算和逻辑叠加等空间分析操作后的误差传播关系。
When the specimen area is larger than the mouth area, this overlay upon the ledge is a source of error, particularly for thick specimens.
当试样面积大于杯口面积时，试样在透湿杯边缘的覆盖就成为一个误差来源，尤其是对于较厚的试样。
The overlay material results in a positive error, indicating excessive water vapor transmission.
试样覆盖将导致一个正向误差，表示有额外的水蒸气透过。
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