那子弹从墙上反跳回来.The bullet ricocheted from the wall.假设分子与板碰掸后粘附在板面上,而不是反跳开.Assume that the molecules stick to the plate rather than rebound.撞在前进中的活塞上的分子,会加速反跳.A molecule striking an advancing piston recoils with increased spe...
The general approach commonly adopted by most nutritionists is to measure the energy content.被大多数营养学家所普遍采用的一般方法是去测定能量含量.The energy content of fuels is directly related to the mass and not volume.与燃料的发热值直接有关的是质量而不是容积.Duri...