气体环是环绕着行星的环形气体云或等离子。在地球所在的太阳系，气体环是因为卫星的大气层和行星的磁场交互作用形成的。
爆炸性气体环境 [环境] explosive gas atmosphere ; Explosive atmospheres ; explosive gas environment
易爆气体环境 explosive atmosphere
气体环境 gaseous environment
气体环形激光器 gas ring laser ; gas ring lottomr
爆炸气体环境 Explosive gas atmospheres
人工气体环境 artificial gas environment
气体环和周围范围 Gas rings and around ranges
类爆炸性气体环境. IIA IIB
玻比特气体环回系统 Permeator Vapour Recovery System
气体循环 gas circulation
以前由可见光望远镜拍摄的星云环仅仅显示出其内部的环绕着恒星的炽热气体环。
Previous images of the Ring Nebula taken by visible-light telescopes usually showed just the inner glowing loop of gas around the star.
照片的左上方是一个日珥，它是一个巨大的等离子体气体环，在这个时候正被抛离太阳。
At the top left of the image there is a solar prominence, a huge loop of plasma, that is being blasted into space.
天文学家长期认为黑洞应该是由一环尘埃和气体包围着的。
Astronomers have long thought that a black hole ought to be surrounded by a torus of dust and gas.
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