于是可以使用牛顿第二定律。
牛顿第二定律可表达成微分方程。
Newton's second law can be expressed as a differential equation.
下面我们讲牛顿第二定律。
牛顿第二定律，动量定理。
可以用牛顿第二定律。
我们从牛顿第二定律出发，并且先只涉及惯性系。
We start with Newton's Second Law, at first referring our problem to an inertial frame.
牛顿第二定律及万有引力定律是根据实验结果总结出来的。
Newton's second law and the law of gravity are summarized with experimental results.
其结果，其中一些方程非常眼熟，比如动量守恒定律和牛顿第二定律。
Turns out, some of these equations were very familiar: the law of conservation of momentum, and Newton's second law of motion.
本文在牛顿第二定律和压力动力学基础上建立了单气门系统的数学模型。
The math model of a single valve system is established on the basis of Newton's second law of motion and pressure dynamics.
结果表明，在实验误差允许的范围内牛顿第二定律均能得到较好地直接验证。
Results from this study indicate that direct verification of the Newton second law could be achieved satisfactorily within the permissible range of error.
依据等效质量概念，也给出了牛顿第二定律和库仑定律的等效质量表述形式。
With help of concept of equivalent mass, equivalent mass form of Newton's second law and that of Coulomb law are presented as well.
按照牛顿第二定律，在离心模拟中的加速度是连接运动学与动力学的重要因素。
The acceleration is a critical factor in centrifuge modelling because it links kinematics to dynamics through Newton second law.
依据牛顿第二定律列出运动微分方程序，解方程序并求得计算瞬时速度的公式。
On the basis of Newton's second Law, a motion differential equation has been put forward, by which a formula to calculating instantaneous velocity has been obtained.
我们可以给其中一个量规定标准，而利用牛顿第二定律来给另一个量确定标准。
We can set a standard for one of them and use Newton's Second Law as the definition of the other.
本文根据牛顿第二定律，建立了惯性分离室内包含多因素的颗粒运动微分方程序。
In this paper differential equations of grain moving in the deposition chamber were developed based on Newton's Second Law.
火箭方程式是为了源源不断的特定推进任务，通过加入牛顿第二定律而得到的。
The rocket equation is obtained for a constant specific impulse mission by integration of Newton's second law.
牛顿第二定律实质上是动量连续性方程的积分形式，因而，力可以被理解为动量流。
Forces can be visualized as momentum currents, for Newton's Second Law is equivalent to the continuity equation for momentum in integral form.
现在，有希望从另外一条途径去解决这个难题：通过对牛顿第二定律进行修正以后，排除了暗物质存在的可能性。
Now, one hopes to solve the puzzle a different way: using a modified version of Newton's second law that would eliminate the need for dark matter altogether.
离散单元法的基本原理是牛顿第二定律，结合不同的本构关系，用动力松弛法按时步进行迭代求解。
The basic principle of the DEM is based on Newton's Second Law of Mot - ion. The whole problem is solved by using the dynamic relaxation method and the time-marching tech...
本文从爱因斯坦速度变换式、相对论中的牛顿第二定律及普遍的能量守恒定律导出质点组的动量守恒定律。
In this paper, the conservation law of momentum is derived from Einstein's transformation law of velocities, Newton's second law in relativity and general conservation law of energy.
应用物理学中的质量守恒定律、牛顿第二定律、动量定律等，建立了交通流的连续性方程、欧拉方程和动量方程；
Conservation of mass, second Newton's law, and momentum law are introduced into traffic flow to set up traffic continuity equation, Euler's equation, and momentum integral equation.
通过理论分析，发现若按一般所认识的负能量粒子的质量是“负”的，则将出现违反牛顿第二定律等基本物理定律的现象。
Through theoretical analysis, the author discovers that the idea of the mass of negative energy particles being negative breaks some physical fundamentals, such as the second Law of Newton.
颗粒的运动满足牛顿第二定律，流体相的运动规律由局部平均的纳维斯托克斯方程求解，两相间的耦合由牛顿第三定律决定。
The motion of individual particles is obtained by solving Newtons second law of motion and gas flow by the Navier Stokes equation based on the concept of local average.
将造波水槽内二维浮体牵引弹簧回复液压缸的受力系统简化为弹簧—质量—阻尼器系统，建立数学模型，并根据牛顿第二定律得到运动方程式。
The model of a kind of wave energy device moored on seabed is simplified into a spring-mass-damping system, and then its motion equation is built according to Newton's second law.
将造波水槽内二维浮体牵引弹簧回复液压缸的受力系统简化为弹簧—质量—阻尼器系统，建立数学模型，并根据牛顿第二定律得到运动方程式。
The model of a kind of wave energy device moored on seabed is simplified into a spring-mass-damping system, and then its motion equation is built according to Newton's second law.
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