分析了炮弹在炮膛内的运动规律，爆炸产物中物理参数与运动参数的主要变化过程。

In this paper, the motion of the shell in the bore and the variation of physical and kinematical parameters in the explosive are investigated.

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而最新的研究结果表明月球水很可能是大爆炸时的岩浆冷却和结晶后的产物。

The results of the new study found that the moon's water was likely present in the hot magma from the impact as it started to cool and crystallize.

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蟹状星云是，超行星在1054年，大爆炸后的产物，下节课中，我会详细讲它。

The Crab Nebula is the result of a supernova explosion that went off in the year 1054, and during my next lecture I will talk a lot more about that.

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