测量摩擦系数有一种简单方法,把物体放置在斜面上,然后不断增加斜面的倾斜度,这是角α
It is fairly easy to measure a friction coefficient by putting an object on an incline and by changing the angle of the incline, increasing it This is the angle alpha.
此外，屏幕几乎总是有一个斜面的边缘。
有两个斜面的屋顶在两端各成一个三角形，称为山形墙屋顶。
A roof with two slopes that form a triangle at each end is called a gable roof.
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