circular orbit

基本解释

And therefore, the total energy now is larger than the total energy that I had in my circular orbit.
因此，现在的,总能量比,在圆形轨道中要大。
So to go around this circular orbit will take the same amount of time as to go around this one, and that is by no means obvious.
沿着圆形轨道运行的,时间和沿着椭圆轨道,所花费的时间是一样的，这决非显而易见的。
E And so the total energy E which I've called the mechanical energy U always for a circular orbit is one-half U and is the same as minus the kinetic energy.
所以总能量,就是我说的机械能,总是圆轨道是1/2的,和减去动能一样。

You've got negative charge in motion, and it's in a circular orbit.
负电荷在运动，它们处在一个环形的轨道中。
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Let's imagine it's a circular orbit.
想象一下,有个圆轨道
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The intervening weeks will be spent in a manoeuvre called aerobraking, which involves using the air-resistance of the thin Martian atmosphere to change the elliptical initial orbit into a circular one from which the planet's surface can be examined in detail.
ECONOMIST: Mars Odyssey