轨道的

The gravitational pull of all the other heavenly bodies deflects the satellite from its orbit and it has to be controlled from Earth very systematically and painstakingly to keep it in the orbit.

在引力的所有其他天体推卫星从轨道和它必须从地球控制系统和非常艰苦，以保持它在轨道上。

The dollies are conveyed within each conveyor segment over a clocked rail, whose speed is controlled by a motorized drive.

移动车在每一个输送机段内部通过一个时钟控制的轨道输送，轨道速度受机动驱动装置控制。

In the track permutation phase, a graph-based heuristic is proposed for permuting the routing tracks.

在轨道重新排列阶段，我们采用一个以图形为主的启发式演算法将所有绕线轨道重新排列。

Research purposes:The paper gives an introduction to the additional force transfer mechanism of welded turnout on ballastless track,presents the calculation model for welded turnout on ballastless track, calculates additional force and deformation of welded turnout on ballastless track by FEM,the result is compared with ballast track.

研究目的：分析无砟轨道基础上无缝道岔的纵向力传递机理，建立无砟无缝道岔计算模型，采用有限单元法计算了无砟无缝道岔受力及变形，并与有砟轨道无缝道岔进行了对比分析，为无砟无缝道岔设计提供参考依据。

The repair methods in production to various troubles of rail of coke-barrier car: base being not solid.

介绍了在不停产情况下就拦焦车轨道基础不实、轨道严重变形等不同部位故障所采取的不同处理方法。

At last, Hartree-Fock and Density Functional Theory was used to calculate the Mulliken bond orders, HOMO and LUMO. The "principle of the smallest bond order" and the "principle of the easiest transition" were selected to judge the decomposition potential of the nitration products, and the results indicated trinitrotoluene would decompose easier than other product, and it was consistent with the experimental results.

最后，采用Hartree-Fock方法和密度泛函方法计算了各硝化反应中主要有机物的Mulliken键级、最高占有轨道能和最低空轨道能，采用&最小键级原理&和&最易跃迁原理&判断出三硝基甲苯最易分解，这与实验结果一致。

Why are they so keenly contesting apogees and and orbital periods of Chandrayaan when as of today it is orbiting the moon !!

他们为什么这么喜欢讨论Chandrayaan轨道远地点和今天Chandrayaan奔月飞行的轨道周期！！！

Because of having big gap between rail s and situating floating status of I-beam girder of rail foundation at production area of coke oven the unstability operation or off the rail could be easy happening.

分析认为拦焦车轨道运行状况较差的原因是拦焦车轨道轨距较大，炉区轨道基础工字钢梁处于浮动状态，极易因轨距进一步扩大而威胁车体平稳运行甚至造成拦焦车脱轨。

Using the valence electron orbit energy E(subscript i and number of valence electron shell n(subscript i, a new connectivity topological index (superscript mE was proposed from δ.

利用价电子轨道能量E和价电子层数n，构建了新的原子点价δ，由点价δ构建价电子轨道能量拓扑指数E。

The determination method of descending/ascending node, longitude of ascending node and frozen orbit parameters for sun-synchronous orbit satellite design was analyzed on the basis of six general orbital elements.

引言卫星的轨道设计一般可分为地面覆盖、轨道复现、卫星组网、星下点照明和卫星受照要求等几类[1]。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。