法向压应力 meaning in Chinese

direct compressive stress

The coherence force c and the inner friction angle of composite increase 115 % - 205 % and 11 % ~ 15 % respectively more than that of no rootstalk soil . 3 the mechanism of dealing with corn rootstalks and eight kinds of blades for experiment in the soil bin have been developed in order to investigating the performance of dealing with rootstalks
土壤-根茬复合体其抗剪强度与剪切面上的法向压应力成正比，复合体土壤凝聚力c比无根土壤增加115 205 ；内摩擦角增加11 15 。