minus ff
常见例句
- So Newton's Second Law tells me -Ff that mg sine alpha minus F f maximum =0 at this point is zero.
根据牛顿第二定律,此时有mgsinα,最大。 - And minus Ff, the frictional force, which is the component uphill, and this is my equation number two.
减去Ff，摩擦力，也就是滑坡向上的力，这是第二个等式。 返回 minus ff