轨道运行

In system on chaos state, motion trajectory controlled by a equation is sensitive to initial conditions. For example, two trajectory from two close initial values were not very difference at short notice. But the distinct difference will presented consequentially after an enough long time.

混沌状态下的系统，按照某方程运行的轨道敏感地依赖于初始条件，例如从两个邻近的初值出发的两条轨道，在短时间内似乎差距不大，但在足够长的时间以后，必然呈现出显著的差别。

In allusion to the characteristic of the closed-loop track railway, the biconditional markers are arranged according to rn sequence.

针对城市轨道交通中列车在线路上循环运行的特点，在分析现有列车定位方法的基础上，提出具有封闭曲线特征轨道线路基于绝对位置编码的列车定位技术。

The train positioning technologies in urban rail transit are analyzed. According to the characteristic that train runs circularly along fixed rail track, train positioning technology based on absolute position encoding is proposed to the closed-loop track railway in urban rail transit. The single biconditional marker, whose value is 0 or 1, is placed on each position of rail track.

针对城市轨道交通中列车在线路上循环运行的特点，在分析现有列车定位方法的基础上，提出具有封闭曲线特征轨道线路基于绝对位置编码的列车定位技术。

The train positioning technology based on absolute position encoding is proposed. The absolute positions of the rail track are encoded with the m sequence. The biconditional markers placed on the rail track are detected sequentially by the train-borne reader. The exclusive position code consists of the binary information in the shift register. The absolute train positioning information can be extracted by decoding this position code.

利用m序列（最大周期线性反馈移位寄存器序列）对轨道线路上的绝对位置进行编码，当列车在线路上运行时，通过车载阅读器顺序检测设置在轨道线路上的二值标记，在不同位置上读到的标记在移位存储器中构成唯一的位置编码，以此位置编码值作为地址与车载阅读器所处位置的坐标信息相对应，就可以实现列车的绝对定位。

The results show that high inclination circular high orbit(150 km or 200 km) has better performance,with its orbit lasting more than one yea...

大量的仿真计算表明，高倾角、圆轨道的中低轨(150 km或200 km)绕月飞行器具有相对稳定的轨道演化特征，在不进行任何调整的情况下，其轨道持续运行时间超过1 a。

To the quality of the 3 power of 10 kg satellite launched into a circular orbit near the ground, if produced by incomplete combustion of fuel, 1% of heat into a satellite in orbit at the time of kinetic energy, fuel quality test for m at least how much?

要把质量为10的3次方千克的卫星发射到地面附近的圆形轨道上，如果燃料完全燃烧产生的热量有1％转化为卫星在轨道上运行时的动能，试求燃料质量m至少为多少？

Outside the atom the electron cloud has the track, according to leaves nucleus far or near differently, these orbits are divided into several levels, the more lower energy level the more near to nuclear.

原子外面的电子云运行是有轨道的，按照离原子核的远近不同，这些轨道被分为几层，离原子核越近能级越低。

We now know that Earth orbits the sun elliptically and, at the same time, spins on an axis that is tilted relative to its plane of orbit.

我们现在知道地球以椭圆型轨道绕日运行，同时以倾斜于轨道面的纵轴自传。

Test results are as follows: Ballastless track structures can effectively improve the dynamic action of train loads on subgrade beds, the measured stresses and acceleration rates are far smaller than those measured with ballasted track structures; axle loads have remarkable influence on dynamic stresses of ballastless track subgrades and have some influence on acceleration responses; speeds of either motor car units or freight trains all have limited effect on dynamic embankment responses; after attenuating over 3 meters high embankment, neither dynamic stresses nor acceleration rates are influential to net cushions at the bottom of column-net structure subgrades

结果表明：采用无砟轨道结构可以有效改善列车荷载对路基基床的动力作用，测得的动应力与加速度值均远小于有砟轨道结构测得的值；列车轴重对无砟轨道路基的动应力影响明显，对加速度响应也有一定影响；无论是动车组还是货物列车，其运行速度对路堤部分的动响应影响均有限；动应力与加速度经3 m 高的路堤后衰减，对桩网结构路基下部的网垫层已基本无影响。

Since there are some disadvantages, such as magnitudes, reference systems and difficulties in observing an asteroid during its motion in its whole orbit, etc., when the asteroid is observed simply by means of the meridian or photograph methods, a new method for observing asteroids with a lower latitude meridian circle and a CCD measuring device is proposed according to the conditions of the geographic latitude of the Yunnan Observatory which can be used to observe the whole orbit of an asteroid.

考虑到单纯用子午方法或照相方法对小行星进行观测存在着因星等、定标星系统，以及难于在小行星运行全轨道上进行观测等方面的不利因素，在本文中，根据云南天文台能观测小行星全轨道的地理纬度条件，提出利用低纬子午环与CCD测量装置相配合，并利用低纬子午环直接提供的定标星，在一个统一的基本仪器系统中，通过对小行星在全轨道上均匀分布的观测，获得高精度的小行星观测资料，以便得到更准确的星表零点改正。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失