久久国产欧美日韩精品,日韩国产精品久久久久久亚洲,99视频精品全部免费免费,91精品国产综合久久走光

frost heaving的音標(biāo)：...

冰凍隆脹，霜拔，凍拔，凍脹...

And the equation of bivariate linear regression between frost heaving ratio and content, compactness is established.建立了凍脹率與含水量和壓實(shí)度的二元線性回歸方程.However, the frost - heaving of soil can have adverse effect to the adjacent pil...