planetary

复数：

名词复数: planetariums

更多词形：

名词复数: planetariums |

单词例句：

Explanation: What causes unusual knots of gas and dust in planetary nebulas?

说明: 在行星状星云内，这种不寻常的云气和尘埃纠结是怎么产生的？

Planetary taxonomy is straining toaccommodate the new worlds.

行星分类学正容入新发现的行星。

Planetary perturbations make the earth's orbit about the sun irregular.

行星的摄动使得地球绕太阳的轨道是不规则的。

Can the Planetary Fortress lift off?

行星要塞能飞行吗?

Planetary nebulae are not as airy and tranquil as their images suggest.

行星状星云并不如影像中所显现的那麽飘逸宁静。

Planetary gear systems are also used in many automatic transmissions.

行星齿轮组也同样用于许多汽车变速器中。

Many objections can be raised to this picture of planetary nebula formation.

形成行星状星云的这一图象可能会引起许多异议。

This fraction matches the fraction of planetary nebulae that are bipolar.

这个比例符合双极星云在行星状星云中所占的比例。

Rather, we infer that planetary systems must be quite common.

相反，我们的结论是行星系统的存在一定相当普遍。