A molecular cloud is a regioncontaining cool interstellar gas and dust left over from the formationof the galaxy and mostly contains molecular hydrogen.

分子云是一个包含冷却星际气体和尘埃的区域，这些气体和尘埃是星系形成之后的残留物，主要由氢分子组成。

A molecular cloud is a region containing cool interstellar gas and dust left over from the formation of the galaxy and mostly contains molecular hydrogen.

分子云是一个包含冷却星际气体和尘埃的区域，这些气体和尘埃是星系形成之后的残留物，主要由氢分子组成。

The complex is called the Vela Molecular Cloud Ridge, and may form part of the edge of the Orion spiral arm spur in the Milky Way galaxy.

这片复合区域被称为船帆分子云脊（Vela MolecularCloudRidge），它可能参与形成了猎户座悬臂的边缘部分。

In this paper, we study the effect of particle number in N body simulation for the aggregation formation of giant molecular cloud.

通过N体数值模拟以不同粒子数对星系中巨分子云的形成的影响进行了研究。