The interphase forces on the propagation were investigated, including wall shear stress, virtual mass force and drag force.
着重分析了相间作用力，包括壁面剪切应力、虚拟质量力、拖拽力，对压力波传播速度和衰减的影响。
Newton discovered that any two objects in the universe attract each other, and that this force is proportional to their mass.
牛顿发现宇宙中任何两个物体都相互吸引，而且这股引力与它们的质量成比例。
In rotation, force becomes torque, mass becomes moment of inertia, and acceleration becomes angular acceleration.
在旋转时，力变成力矩，质量变成转动惯量，加速度变成角加速度。
Design and testing of these physical systems rely on standard design practices that employ the laws of conservation of force, mass, and energy.
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。
That is the analog of force divided by mass equals acceleration, which is d over dt of velocity.
这个类似于，力除以质量等于加速度，就是速度对t的导数。
And so we know the force for a particular mass, and we know the area of the piston.
我们知道每个质量对应的力，也知道活塞的面积。
The power of this mass of people concentrated through microblogs has given rise to the most important balancing force for community life today.
最大多数普通人的力量，就这样通过微博聚合起来，成为公共生活中最重要的平衡力量。
Well, the earth is going to fall towards the apple — So the force on the earth is the mass of the earth times the acceleration of the earth.
地球也会坠向苹果-，因此地球上的力与地球的质量相等，再乘以地球的加速度。
Most of that gas flows inward and adds to the mass of the forming star, but the gas is rotating. The centrifugal force from that prevents some of the gas from reaching the forming star.
大多数气体向里流动，增加正在形成的恒星的质量，但这些气体一直在旋转。
We may take it for granted now, but more than 300 years ago Sir Isaac Newton proposed a revolutionary idea: that any two objects, no matter their mass, exert gravitational force toward one another.
或许如今我们对此已习以为常，然而艾萨克·牛顿先生300多年前提出的观点在当时颇具颠覆意义：任意两物体，无论质量如何，彼此之间具有引力。
Einstein's major breakthrough was to say that space and time are not absolutes and that gravity is not simply a force applied to an object or mass.
爱因斯坦的重大突破在于指出了空间和时间并非绝对之物，重力也并非仅仅只是施加于物体之上的力。
So now the restoring force doubles and the mass doubles, the acceleration remains the same, the period remains the same.
所以现在回复力加倍，物体质量加倍，加速度不变，周期不变。
The task force recommends that children aged 6 to 18 have their body mass index - B.M.I. - measured and, if they are found to be overweight, be referred to a weight-loss program.
该专责小组建议，6岁到18岁的孩子应测量他们的体重指数(b.m.i.)，如果发现他们超重，就应当提及减肥计划。
His failings were largely due to the absence of concepts like mass, velocity, force and temperature.
它的失败主要是因为没有像质量、速度、力和温度这样的概念。
If I have a huge spring force, the acceleration on a given mass will be high.
若弹力巨大，那么在物体上的，加速度就大。
And so you see that the gravitational force due to the earth on a particular mass is linearly proportional with the mass.
你知道重力由地球产生，它与物体质量，成正比。
Gravity and body mass are a 'free' source of power, which can minimize reliance on muscular force.
重力和身体的质量都是免费的能源，能减少我们对肌肉力量的依靠。
In other words, the 'force' appears to adjust its strength automatically to match the mass of the object, thus always producing the acceleration characteristic of the location.
用另外的话说就是，这个“力”似乎会根据物体的质量来自动调整它的大小，这样就能在某个位置总是产生同样的加速度。
The center of mass will immediately produce a force that swings the aircraft back to its position directly below the fulcrum, just as a pendulum or keel would.
大规模的中心会立即产生波动的力量，飞机回到自己的立场正下方的支点，就像一个钟摆或龙骨会。
The purpose of this laboratory activity is to investigate the relationship between force , mass , and acceleration.
本实验的目的是研究力、质量和加速度之间的关系。
Or in other words a moving body is not a body of mass but just the force.
换句话说运动物体不是一个机构的质量，但只是武力。
The units painted on the dial of a scale are often mass units, not force units.
秤的刻度盘上所标单位是质量的单位，而不是力的单位。
Aiming at the decline of maximum braking force caused by the mass transfer during the course of braking, the article advances a method which USES active suspension system to reduce dynamic wheel load.
针对汽车制动过程中质量转移而使最大制动力下降的问题，提出利用主动悬架系统减小汽车动态车轮载荷的方法。
However, in order for this unification to work mathematically, it requires that force-carrying particles have no mass.
不过，为了使这二者的统一符合数学计算，需要负责传递力的粒子质量为零。
Human overpopulation is the driving force behind the current mass-extinction crisis endangering.
目前大量濒危物种灭绝危机的背后驱动力正是人类人口过多；以下是灭绝物种的比例。
Force is defined as mass multiplied by acceleration.
力是用质量与加速度相乘定义的。
A black hole is a concentration of mass great enough that the force of gravity prevents anything from escaping from it except through quantum tunneling behavior.
一个黑洞是物质浓缩到足够大的以致引力除了通过量子隧道行为之外阻止任何东西从它那里逃逸。
When a rotor rotates around its axis, the centrifugal force is produced due to the uneven distribution of mass relative to the axis.
任何转子在围绕其轴线旋转时，由于相对于轴线的质量分布不均匀而产生离心力。
Furthermore a mass of numerical calculations of the internal force of pile group under different magnitude and obliquity loads is made by the program.
此外，采用本文程序对不同荷载量级及倾角下群桩基础的内力进行了大量的数值计算。
When the rotor is rotating around its axis, the centrifugal force is produced because of the uneven mass distribution with respect to the axis.
何转子在围绕其轴线旋转时，由于相对于轴线的质量分布不均匀而产生离心力。
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