orbital

軌道の

惑星や月、宇宙船が宇宙の別の天体などを回る道筋に関する。

やさしい英語で： Connected with the path of a planet, moon, or spacecraft around another object in space.

• The satellite reached its orbital position.
• Earth’s orbital period is about one year.
• Engineers adjusted the spacecraft’s orbital speed.

よく使う表現： orbital path, orbital speed, orbital period, orbital motion

環状の

町や都市の中心を通らず、外側を取り囲むように通る。

やさしい英語で： Going around the outside of a town or city, rather than through its center.

• The orbital road carries traffic around the city.
• We took an orbital route to avoid the center.
• An accident closed part of the orbital motorway.

よく使う表現： orbital road, orbital motorway, orbital route

軌道、オービタル

原子や分子内の電子のエネルギーと、存在しやすい場所を数学で表すもの。

やさしい英語で： A mathematical description of an electron’s energy and where it is likely to be in an atom or molecule.

• The electron occupies an orbital with low energy.
• Two electrons can share the same orbital.
• The diagram shows the shapes of several atomic orbitals.

よく使う表現： atomic orbital, molecular orbital, occupied orbital