查询词典 orbit

If there really were a Planet X out there doing what Planet X was supposed to do -- that is, perturb the orbit of Neptune -- it really would have to be quite big.

如果真的有一颗X星做着X星该做的事情--扰乱海王星的轨道，那么它应该相当大。

The perturbed relative motion of satellite clusters on highly eccentric orbits makes orbit designers face a new challenge.

大椭圆轨道上卫星编队的相对运动特性及其所受摄动力的影响给编队轨道设计者提出了新的挑战。

That phenomenon cannot be replicated in a Petri dish in the lab, but it can be, in the microgravity of low earth orbit.

这种现象不能被复制在实验室的培养皿中，但它可以在微重力条件下的低地球轨道。

The models of phase maneuver and orbit plane maneuver of the space-based platform are founded.

而后建立了天基平台的轨道面机动与相位机动的数学模型。

The local dynamics behaviors of grazing orbit of piecewise smooth systems are investigated.

研究了分段光滑系统中擦边轨道附近的动力学行为。

The grazing bifurcation point is found in terms of the conditions for the existence of grazing orbit.The bifurcation diagrams are gained through previous piecewise smooth map and numerical calculation,they are similar structurally.

利用擦边分岔条件找到了此系统的擦边分岔点，利用推导的擦边分岔的分段映射和直接数值仿真获得不连续分岔图，两者得到的分岔图在结构上是类似的。

If the satellite has an elliptical orbit, the result is a spiral wave, a miniature version of the pinwheel pattern of our galaxy.

如果卫星的轨道是椭圆的，就会产生螺旋波，就像是银河系纸风车形状的缩影。

E x planation: Spectacular vistas of Saturn and its moon continue to be recorded by the Cassini spacecraft. Launched from Earth in 1997, robotic Cassini entered orbit around Saturn in 2004 and has revolutionized much of humanity's knowledge of Saturn, its expansive and complex rings, and it many old and battered moons.

卡西尼飞船依旧拍摄到了土星及其卫星的壮观影像。1997年从地球发射升空后，卡西尼飞船在2004年进入土星绕行轨道，它让人们对土星的了解发生了翻天覆地的变化，那广阔而复杂的光环，还有许多历尽沧桑的卫星。

Its axis is always at the angle to the plane of its orbit – an angle of about 23.5 degrees.

地轴同地球轨道平面总是成一个角度----大约二十三度半的角度。

Its axis is always at the angle to the plane ofits orbit - an angle of about 23.5 degrees.

地轴同地球轨道平面总是成一个角度----大约二十三度半的角度。

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％。