minus ff

常见例句

双语例句

• 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。
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