energy slope meaning in English

能量坡降
能量梯度
能面比降

First , total resistance is derived by summing different resistance components . the relationship between resistance of still plane bed and energy slope has been proposed from the similarity between sediment incipient motion and still bed resistance . and this relationship can be used in computing grain resistance
一是从不同的床面阻力单元出发，利用泥沙起动与定床阻力之间的相似性研究了静平整床面的阻力，建立了静平整床面阻力与能坡之间的关系式，并将此式用于沙粒阻力的计算。