P Creep and shrinkage of the concrete depend on the ambient humidity, the dimensions of the element and the composition of the concrete.
混凝土的蠕变和缩水取决于环境湿度，结构尺寸以及混凝土成分。
With the increase of relative humidity, both length and diameter of vessel element increased, as well as the frequency of rays.
随着空气相对湿度的增加，导管分子长度和直径均增大，射线频率减小。
The finite element simulation and the deduced theory show the different changes of the simulated depth of carbonization under different temperature and relative humidity.
通过有限元模拟以及理论推导，还得到了模拟碳化深度在不同温度及相对湿度下的变化情况。
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