行星时是一个由七个可见行星参与构成以古代时间系统。这七大行星分别统治着每一天和每一天的不同部分。
彗星在圆形轨道上形成,但当它们冒险太接近行星时,就会被引力抛入现在的椭圆轨道。
Comets formed in circular orbits but were gravitationally flung into their present-day elliptical orbits when they ventured too close to planets.
2011年中期到年末当曙光号进入灶神小行星时,将开始提交科学数据。
Scientific data will start rolling in sometime in mid- to late 2011, when Dawn enters Vesta orbit.
当黑洞吞噬附近的行星时,一些落入其中的物质以热等离子的形式逃出生天。
As the black hole devours nearby stars, some in-falling matter escapes as hot plasma.
That was Cartesian space. When I plot r as a distance out from the nucleus that is sort of our simple-minded planetary model. Now let's look at energy.
笛卡尔坐标系,当我用r表示,离原子核的距离时,那只是我们头脑中简单的,类似行星的模型,现在我们看一下能量问题。
应用推荐