该团队使用这种方法来生产聚合泡沫，其孔隙梯度类似大自然中的细胞结构，如骨头和木头等。
The approach has allowed the team to generate polymeric foams with porosity gradients closely resembling natural cellular structures such as bones and wood.
考虑了混凝土多相系统中固体速度、饱和度乘蒸汽密度的空间梯度和孔隙压力空间梯度；
The model includes solid velocity, space grade of saturation with vapour density and space grade of porous pressure in concrete multiphase system.
粘性土团粒间孔隙水的连通状态决定于团粒接触点附近渗透结合水膜的粘滞力和外界水力梯度的渗透力之间平衡状况；
Second, the state of inter-aggregate pore water of cohesive soil is determined by(balanced) condition between damping of bound water membrane and permeability pressure of hydraulic gradient.
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