关键是要使用滑轮系统，以扩大其作用力。
The key was to use a pulley system that would magnify the applied force.
所以这些是物体上，仅存的作用力。
重力是让它们连为一体的唯一作用力。
只有一种反作用力，那就是你，山姆大叔。
Only one counterforce was available, and that was you, Uncle Sam.
自由落体是指，唯一作用力是重力的情况。
Free fall is when the forces acting upon you are exclusively gravitational.
这将导致作用力产生一个扭矩，使球旋转。
This causes the applied force to act as a torque, which therefore gives the ball a spin.
最可能的原因就是：诸如暗能量等神秘的宇宙作用力。
The most likely reason: a mysterious cosmic force known as dark energy.
正面思想的作用力是零。
在美国- 17号上，中船体充当抵消这个作用力的梁。
On USA-17, the middle hull serves as a beam to counteract those forces.
还有一个例子证明作用力,与负反作用力相等。
That's another example where you see action equals minus reaction.
对短期气候作用力的控制要比应付二氧化碳简单。
And doing something about these short-lived forcings is easier than tackling carbon dioxide.
根据功的原理，阻力与距离的乘积等于作用力与距离的乘积。
From the principle of work, the product of the resistance times its distance equals the product of the effort times its distance.
然而如果遇上足够强大的反作用力，经济动力将会迅速消失。
Yet economic momentum is quickly dissipated if it meets strong-enough counterforces.
水分子粘合在一起是因为水分子间有轻微的作用力。
Water molecules stick together, because they carry a slight charge on each end.
把表面粗糙化也可能是减小飞机反作用力一个办法。
There may also be a way to cut aircraft drag by making some surfaces less slippery.
处于静力平衡的物体，仅仅所有作用力之和，为0是不够的。
For an object to be in static equilibrium, it is not enough that the sum of all forces is zero.
如果这种情况是正确的，那就意味着进化的核心存在反作用力。
If this picture is correct, it means that there are opposing forces at the heart of evolution.
中微子的相互作用力很弱，对我们日常生活没有影响。
They are extremely weakly interacting particles that have zero effect on our everyday lives.
比如，当飞机的螺旋桨疾驰过云层时，会给云一个向后的作用力。
When a plane's propeller, for example, spins through a cloud, the propeller exerts a rearward force.
更为重要的是，环境对物种的作用力通常不会很快显现。
What's more, any such effects of nurture (environment) on a species' nature (genes) were not supposed to happen so quickly.
我通常的研究是同样是调查海啸作用力沿海岸线的距离是怎样变化的。
My current research is also investigating how tsunami forces change with distance from the shoreline.
工人们在检查用于探测罕见宇宙粒子微弱作用力的光传感器。
Workers inspect light sensors that detect the watery impact of rare cosmic particles.
这些物理系统的测试依赖于对作用力、质量和能量守恒定律的标准设计实践。
Design and testing of these physical systems rely on standard design practices that employ the laws of conservation of force, mass, and energy.
她说：“既然这样我们为什么不动脑筋模拟与生育相似的作用力呢？
"But why aren't we thinking of mimicking the effects of childbirth?" she said.
海浪的作用力向其底部及侧部挤压，这股压力向上传递至冰山的表面。
Wave action applied pressure to the bottoms and sides, and the pressure propagated up through the ice to the surface.
由于碳纳米管呈规律状排列，他们能够从不同的方向对材料施加作用力。
Because of the regular alignment of the nanotubes, they were able to stress the material from various directions.
然而，作用力是不会停止的，因为重力都会存在，我马上会向你们展示。
Here, however, the torque will never stop because this Mg will always be there, and I will show that to you shortly.
然而勤劳的催产素受体，因个体差异，外形不同，对人体的作用力也不同。
Yet the precise contours of oxytocin’s hardworking receptor differ among individuals, to apparently noticeable effect.
当他注意到新材料受到连续作用力而产生反应时，令他惊讶的现象出现了。
The surprise came when he discovered how his new material responded to repeated stress.
因此，暗物质一定存在，而且星云团的碰撞产生的作用力将暗物质同普通物质相分离。
Thus, dark matter must exist, and it was wrenched apart from normal matter by the force of the collision of the clusters.
应用推荐