The colliding galaxies would have created a powerful density wave that would have swept out the material into an expandingring, stimulating star formation.
碰撞的两个星系产生了强烈的密度波,把物质推到外侧的环形上,并激发了恒星的形成。
2
Some proposals for problems involved in experimental technique were put forward through resin matrix composite freely expandingring experimental technique analysis.
通过树脂基复合材料爆炸自由膨胀环实验的分析,对实验技术中存在的问题提出了一些建议。
3
The expandingring carries with it another great mystery, however: why wasn't this supernova seen 400 years ago when light from the initial blast should have passed the Earth?