m{atrix}-p{orosity}-c{ompressiblity} pcdc e{lement} c{onstitutive}-m{odel} hydr{aulic}-p{orous}-p{roppant}-m{edium} prop{erty} m{atrix}-p{orosity}-c{ompressiblity} **描述:**单元孔隙压缩系数(渗流开关打开时起作用)。省缺值:0.0 。可选 值: f(float,孔隙压缩系数值)