星际云

坍缩的星际云克服向内的引力而向外膨胀到较宁静的星际环境中去。

Collapsing interstellar cloud reverses its gravitational infall and expands outward into the relatively quiescent interstellar environment .

H3~+离子与O原子的反应对星际云化学有着重要的意义，它为星际云中合成H2O提供了可能的途径，为此，我们构造了激发态H3O~+（T）的全局势能面。

The reaction of H3 + ion and 0 atom provides a pathway for synthesizing H2O in interstellar clouds , thus it has attracted a great deal of experimental and theoretical studies in the past few years .

实测天文学在这里所面临的头等任务是研究实际的星际云。

The paramount task here facing observational astronomy is to study real interstellar clouds .

而且我们的整个太阳系似乎正在进入一个危险的星际云能源。

And that our entire solar system appears to be moving into a dangerous interstellar energy cloud .

图2.1揭示出五个不同的投影在亮星背景上的星际云的化学组成对太阳值的偏差。

Figure 2.1 illustrates the departures of chemical composition from solar values for five different clouds projected against bright stars .

星际气体云射手座B含有十亿的十亿的十亿升的酒精（本站站长计划不久将来要移居该处）。

The interstellar gas cloud Sagittarius B contains a billion , billion , billion liters of alcohol [ JFrater is planning to move there in the near future ] .

利用IOS近似模型，计算了星际分子云条件下E型CH3CN-H2含超精细能级的的碰撞跃迁速率系数。

IOS ( infinite order sudden ) approximation , the hyperfine collisional transitional rate coefficients of E-type CH3CN-H2 have been calculated under the conditions of interstellar molecular clouds .

行星际磁云边界层中的电子分布函数特征

Characteristics of Electron Distribution Functions in Magnetic Cloud Boundary Layers

星际分子云平均寿命的研究

A study of the mean lifetime of interstellar molecular clouds

星际气体云经常在碰撞间将动能传给冲击波和辐射。

Interstellar gas clouds frequently collide and convert their kinetic energy into shock waves and radiation .

一个冷的星际气体云的收缩，可以通过许多不同的方式来进行。

The contraction of a cool interstellar gas cloud can proceed in a variety of ways .

一方面是星际分子云与恒星形成的天文研究取得了令人瞩目的成就.低温大质量星际分子云中的磁场

Major improvement has been made in the studies of interstellar molecular clouds and star formation . MAGNETIC FIELDS IN COLD AND MASSIVE CLOUDS

研究表明，包括太阳在内的恒星是由冷暗的星际分子云收缩形成的。

It has been shown that stars , including our own solar system , are formed by contraction of cold and dark interstellar clouds .

目前了解的恒星形成的一个基本图象是，恒星是由一个足够大质量的星际分子气体云在其自引力作用下塌缩而形成。

The current picture is that stars are formed during the collapse of a large enough self gravitating interstellar molecular cloud .

近年来，许多学者的工作表明，星际磁场在星际云的形成与演化及恒星形成过程中起着重要作用。

Recently , the work of many authors in the field of astronomy has shown that intersteller magnetic field plays an important role in the formation and evolution of intersteller clouds as well as in the formation of stars .

磁力线实际上是紧附在星际气体上，并跟随星际云一道作着变化莫测的运动。

The magnetic lines of force are in effect glued to the interstellar gas , and they follow the clouds in their capricious motions .

人生苦短，莫让它恍若白驹过隙，每个人只能有一次机会，然后一切都会成为过往云烟。磁力线实际上是紧附在星际气体上，并跟随星际云一道作着变化莫测的运动。

Life is too short too let it pass you by . We only have one shot at this and then it 's gone . The magnetic lines of force are in effect glued to the interstellar gas , and they follow the clouds in their capricious motions .