contrast threshold是什么意思

用法例句

Influence of neatral-axis angle on ultimate axial compression ratio for T-shaped RC columns;

中和轴角对钢筋混凝土T形截面柱界限轴压比的影响

On the basis of the limit failure conditions of the section of eccentric compression member ,this paper uses a parallel-method to calculate the position of neutral axis when the angle of neutral axis changes and uses finite element method to study the ultimate axial compression ratio for cross-shaped R.

采用简化的平行线法计算中和轴的位置,用有限元法对钢筋混凝土十字形截面柱界限轴压比进行分析。