The book remains at rest or, in physical terminology, in static equilibrium not because there are no forces acting on it but because the forces which do act on it annul one another.
此书处于静止，或者用物理术语来讲处于静力平衡，并不是因为没有力作用在它上面，而是因为作用其上的力彼此互相抵消。
Now... I want to show you some examples of static equilibrium which are not so intuitive.
现在给你们看一些，静力平衡的例子，不那么凭直觉而定。
So, today I have chosen a ladder as my subject of static equilibrium.
今天我选择了扶梯，作为静力平衡的道具。
In this case, it will rotate about the center of mass, so it's not static equilibrium.
在这个例子里，它会绕着重心旋转，因此不存在静力平衡。
So the friction plays an essential role for us to get static equilibrium, and that is often the case.
摩擦力在达到静力，平衡中起了很大作用，情况就是这样。
Today I want to discuss in detail what it takes for an object to be in complete static equilibrium.
今天我想详细讲讲，物体达到静力平衡，所需要的条件。
For an object to be in static equilibrium, it is not enough that the sum of all forces is zero.
处于静力平衡的物体，仅仅所有作用力之和，为0是不够的。
Below the water table at static equilibrium, hydrostatic pressure potential increases with increasing depth.
当静态平衡时，在水面以下，静水压力随深度而增加。
Such a slow compression carries the gas through a series of states.each of which is very nearly an equilibrium state and it is called a quasi-static or a“nearly static”process.
这样的缓慢压缩能使这种气体经历一系列的状态，但各状态都很接近于平衡状态，所以叫作准静态过程，或“近似稳定”过程。
Below the water table at static equilibrium, hydrostatic pressure potential increases with increasing depth.
在水面以下，当静态平衡时，静水压力随深度而增加。
Such a slow compression carries the gas through a series of states. each of which is very nearly an equilibrium state and it is called a quasi-static or a "nearly static" process.
这样的缓慢压缩能使这种气体经历一系列的状态，但各状态都很接近于平衡状态，所以叫做准静态过程，或“近似稳定”过程。
The paper explores the static equilibrium adsorption and adsorbent kinetic properties of methamidophos, patulin and brown substance in apple juice on adsorbent resin under coexistent conditions.
本文研究了共存条件下苹果汁中甲胺磷、棒曲霉素和褐变成分在吸附树脂上的静态平衡吸附和吸附动力学特性。
In this paper, the inverse force analysis of planar three spring system is studied using numerical continuation. All static equilibrium positions of the system is obtained.
将连续法引入机构动力学，研究了平面一般三弹簧系统的静力逆分析，得到了该系统的全部平衡位置。
The anthropological equilibrium theory although because its static perspective receives criticisms, however the new explanation system not yet completely established.
人类学的平衡理论虽然因其立足于静态系统的视角而受到批评，然而新的解释系统尚未完全确立。
In the second part, it goes on with static game of perfect information and brings in Nash Equilibrium.
第二部分围绕完全信息静态博弈展开，介绍了纳什均衡；
The temperature effect on initial equilibrium shape and characteristics of static responses of pretensioned cable-membrane structures is analyzed in this paper.
对预应力张拉索膜结构由于温度变化对结构初始平衡形状和静力效应的影响进行研究。
Dynamic method and static equilibrium method are the two basic methods of the experiment.
实验的基本方法有动态法和静态平衡法两种。
This paper focuses on the static equilibrium adsorption behaviors and the confirmation of chemisorption characteristics.
讨论了静态平衡吸附行为和化学吸附特征的证实。
There are many articles to study duopoly game, but they base on the totally rational foundation basically, most articles focus on to discuss the static equilibrium.
研究双寡头竞争的文章国内外非常多，但前期研究基本上都是建立在完全理性的基础之上的，文章的重点都是讨论静态均衡。
Initial equilibrium shape and static behavior of pretensioned membrane structures is analyzed by dynamic relaxation method in this paper.
利用动力松弛法对预应力张拉膜进行初始平衡形状的确定以及静载分析。
The equilibrium of complete information dynamic Duopoly quantity competition in continuous-time is the same with Cournot equilibrium of complete information static quantity competition.
在完全信息连续时间动态产量博弈中，均衡解和完全信息静态产量博弈的古诺均衡相同。
The characteristic line method meets the static equilibrium equations and yield conditions, which gives the lower limit of the solutions.
本方法满足静力平衡方程和屈服条件，属于极限分析理论的下限解。
Finally, the static bifurcation of equilibrium positions and local stability of the structure were discussed.
最后，讨论了该结构平衡点的静态分叉和局部稳定性。
In this experiment, students will verify the consequences of static equilibrium for a weight suspended from a cable.
在该实验中，学生要证明钢丝绳承担重力的静力平衡结果。
In view of the disadvantages of the present modeling methods for parachutes (suspension) systems, a novel method based on static equilibrium of the middle points is presented.
针对现有降落伞吊挂系统建模方法的缺点，基于中间点的静力平衡条件提出了一种新的建模方法。
The static equilibrium equation for the Cabin Supporting Structure is solved by iteration, which could make the six cables loaded very closely.
通过优化策略，迭代求解出馈源舱支撑结构的静平衡位置，可使六根悬索的受力尽可能均匀一致。
Thirdly, the static equilibrium equations are given.
然后，给出了工件的静态平衡方程。
The static equilibrium differential equation of the casting zones and rolling zones during roll casting process is deduced respectively using slab method.
利用切块法分别推导出了铸轧过程上述两区的静力平衡微分方程。
A new theoretical solution of shallow square foundation is presented based on static equilibrium of rigid-plasticity body.
根据刚塑性体的静力平衡条件，推导了方形浅基础地基承载力的理论解。
The simulating results indicate that these static control laws can ensure the vehicle's equilibrium as it flies following the flight track of the towing plane.
仿真计算表明，所采用的控制律可以满足运载器飞行轨迹跟随拖曳飞机飞行轨迹时的飞行平衡特性。
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