首先，这是氢气中的两个s轨道，1s与1s轨道重叠，产生sigma分子轨道。

First of all, this is the two s orbitals in hydrogen, 1s plus 1s smearing to give us this sigma molecular orbital.

youdao

但有时，即使当系统在没有相互重叠时，这一对恒星的整体亮度也会明显下降——暗示着，还有第三个物体围绕着这一对恒星作轨道运转。

Sometimes, however, the system's overall brightness dipped even when the stars were not eclipsing each other-hinting at the presence of a third body orbiting the binary pair.

youdao

利用重叠圆锥曲线方法，针对着陆型和月球卫星型两种地月转移轨道，给出了一种地月转移轨道的快速设计方法。

A fast design method for transfer orbit of lunar probe is presented using overlap conic curve method aimed at lunar landing transfer orbit and lunar satellite transfer orbit.

youdao

If we're talking about a single bond, we're talking about 2 orbitals overlapping in the internuclear axis.

如果我们讨论的是单键，我们讨论的是两个轨道,在核间轴中重叠。

麻省理工公开课 - 化学原理课程节选

First of all, this is the two s orbitals in hydrogen, 1s plus 1s smearing to give us this sigma molecular orbital.

首先，这是氢气中的两个s轨道，1s与1s轨道重叠,产生sigma分子轨道。

麻省理工公开课 - 固态化学导论课程节选

And this is the lateral smearing. They call it x.

这是侧面重叠，这个我们叫做X轨道。

麻省理工公开课 - 固态化学导论课程节选