常見例句雙語例句m2g Now, I know what T is, that is, m2 g + so m2 g equals m1 g sine alpha plus the maximum frictional force, which is this value.而T又等於,因此m2g=m1gsinα,最大靜摩擦力，也就是上麪這個。Now, I don't want this ladder to slide, so now I have a requirement that the frictional force must be less or equal to the maximum frictional force possible.我不希望梯子滑下來，所以我要求,摩擦力必須小於,或者等於,摩擦力的可能最大值。We have friction in this direction, because clearly the ladder wants to slide like this, so the frictional force will try to prevent that, will be in this direction.這個方曏有摩擦，因爲很明顯,梯子會這麼滑下，而摩擦力,會阻止它這麼做，它會在這個方曏。權(quán)威例句We normally end up thinking that this frictional unemployment is going to be 3 perhaps 4% of the labour force at any one time.FORBES: The Problem With US Unemployment Is That It Is Now Like European Unemployment 返回 frictional force