So, it means to move from an elliptical orbit to a parabolic orbit?

那么，就意味着需要从椭圆轨道转到抛物线轨道？

The problem is when the capsule moves from an elliptical orbit to a parabolic orbit.

棘手的是，如何能让太空舱从椭圆轨道转到抛物线轨道。

The orbit is now a hyperbola, which is similar to a parabola, but is even more open.

这种轨道是条双曲线，类似于抛物线，但更加开放。

An escape orbit is open — it doesn't come back — and is shaped like a parabola.

逃逸轨道是开放的——它不会——状就像抛物线。

Zero Gravity Corporation uses a modified Boeing 727, flying in parabolic motion to create multiple spurts of weightlessness.

零重力公司使一架改装过的波音727飞机，以抛物线运动的方式飞行，创种失重状态。

All you need is a jetliner, a parabola and voila, you're weightless.

你需要的只是一架客机, 飞行个抛物线, 然后看看自己, 你已经失重了。

But because gravity makes the ball's trajectory a parabola, the air pushing against the ball changes directions as it flies.

但是因为重力使球的轨迹呈抛物线，所以当球飞行时，推动球的空气改变了方向。

Instead of a parabola that just goes like this.

而不是像这样的抛物线。

Used to play with the parabolas myself.

我自己过去常常玩抛物线。

Or you could even think of it as a three-dimensional parabola.

或者您甚至可以将其视为三维抛物线。

I went on a plane that does parabolic trajectories.

我坐过一架飞行轨迹呈抛物线的飞机。

There are 31 parabolas per flight.

每次飞行有 31 条抛物线。

They've got parabolic mikes. They can pick you up 100 yards away.

他们有抛物线麦克风, 他们可以在100码外接你。

And most of our life looks like this around this straight base level. It's very difficult to get an upward trajectory.

人生的数时候，幸福感都是在基准线上下波动，获得上升抛物线很难。

In Bordeaux, the 3D printing process is being researched in a parabolic flight.

在波尔， 3D 打印过程正在抛物线飞行中进行研究。

But this literally over the last five years, went parabolic.

但实际上, 在过去的五年里, 这种现象呈抛物线式增长。

The metal powder is in a container at the beginning of the parabolic flight.

金属粉末在抛物线飞行开始时位于容器中。

That is a particular challenge for the scientists, as the gravitational force during a parabolic flight varies.

这对科学家说是一个特殊的挑战，因为抛物线飞行期间的引力会发生变化。

Mathematically, the value of eccentricity varies between zero and one; with zero representing a circle and one transforming into another shape, called a parabola.

在数学上，偏心率的值在0和1之间变化，零代表一个圆，一个转换成另一种状，称为抛物线。

Rather than using a parabolic shape for the dish that would focus everything to a single point, they chose a spherical curve.

他们没有使将所有东西都集中到一个点的抛物线状，而是选择了球面曲线。