critical depth meaning in Chinese

临界深度
临界水深

Direct formula calculating critical depth for open trapezoidal channel with spherical bed
弧底梯形明渠临界水深的直接算法
Calculation on uniform flow depth and critical depth of open channel with iterative method
用迭代法计算明渠均匀流水深和临界水深
A direct formula based on newton algorithm for calculating critical depths of trapezoidal open channels
基于牛顿法的梯形明渠临界水深直接算法
In arid and semi - arid areas , the land salinisation has become very serious because the earth ' s surface evaporates strongly and highly - mineralized ground water rises above the critical depth
在干旱和半干旱区，由于地表强烈的蒸发和高矿化度的地下水超过了临界深度，土壤盐渍化现象非常严重。