imperviousadj.不能渗透的;不为所动的
impervious to pity不为怜悯所动
impervious measure防渗措施
impervious curtain防渗帷幕
impervious surface不透水面层
impervious subsoil不渗透底土
impervious concrete防渗混凝土
impervious material防渗材料,不透水材料
impervious coercion蛮横要胁
impervious property抗渗性能
impervious grouting防渗灌浆