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我们在实践中摸索制造了一种简单的上下楼小车,载物轻便。其斜边AB=(AB~2+BO~2)~(1/2);上下跳动值是斜边AB与直角边的差值,即为AB-AO。
We groped in practice to create a simple car up and down, carrying lightweight. Its bevel AB = (AB ~ 2 + BO ~ 2) ~ (1/2); up and down beat value is the difference between the hypotenuse AB and the right angle edge, which is AB-AO.