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.
根據牛頓第二定律,此時有mgsinα,最大。 - And minus Ff, the frictional force, which is the component uphill, and this is my equation number two.
減去Ff，摩擦力，也就是滑坡曏上的力，這是第二個等式。 返回 minus ff