Forces could be various and complicated, but all the complicated forces inside human body could be divided into 3 categories: pulling force, pressure and tension; and there exists the respective stresses: pulling stress, compressive stress and tensile str
Forces could be various and complicated, but all the complicated forces inside human body could be divided into 3 categories: pulling force, pressure and tension; and there exists the respective stresses: pulling stress, compressive stress and tensile str
这三个要素缺一不可，力的表现形式是多样性和复杂的，但在人体内不管多么错综复杂的力均可以概括为三种力的形式：即拉力、压力和涨力，同时存在相对应的应力，即拉应力，压应力和涨应力。