fall factor meaning in English

下落系数，为下落距离除以有效绳长。
坠落系数

4 . the non - linear interaction mechanism derived from the scale of system was discussed . the paper deemed that , falling sliding face is not a rectilinear type , the non - linear coupling of falling factors sharply enhanced in large sand - pile ; the stabilization of surface layer sands are different in the time and space , especially the stating probability is higher than halting , and probability of fault in slope foot is higher than top as well ; the faulting forms will be affected by bounder situation strongly
大尺度散粒体坡面的崩塌滑动面，一般并非直线形，在崩塌过程中的耦合作用将增大落沙规模；理想化的沿直线坡面滑动情况，坡面表层砂粒的稳定性也并不是在时间、空间上都均衡的，可以造成起动容易止动难，或坡角失稳概率大从而牵连整个坡面的情况；长大高陡坡面的失稳形式，可以受坡脚(边界)的巨大影响。