
好词典

Named after Sir Isaac Newton (1642–1727), the English mathematician and physicist who formulated the laws of motion and universal gravitation. 源自英国数学家、物理学家艾萨克·牛顿爵士(1642-1727),他提出了运动定律和万有引力定律。
❶ 牛顿,物理学中力的国际单位,表示使1千克质量的物体产生1米每二次方秒加速度所需的力。
“One newton is the force needed to accelerate one kilogram of mass at the rate of one metre per second squared.”
(1牛顿是使1千克质量的物体以每秒平方1米的加速度运动所需的力。)
“The apple exerted a force of about one newton when it fell from the tree.”
(苹果从树上落下时施加了大约1牛顿的力。)
Newton's laws — 牛顿定律,指艾萨克·牛顿提出的描述物体运动的三条基本物理定律,是经典力学的基础。
“Newton's laws of motion explain how objects move when forces act upon them.”
(牛顿运动定律解释了物体在受力作用时如何运动。)