Permant
n. 波曼特铁镍合金;帕马特低膨胀系数
例句
It is indicated that the accumulation of frost heave pressure inside and outside the ice wall is the ultimate reason that the freezing pressure usually exceeds the permant horizontal ground pressure.
分析认为,冻结壁内外部冻胀力的积聚,是冻结压力超过重液水平地压的根本原因。