What you're effectively doing with a PDE is repeatedly setting off a small charge of hi-explosive inside a metal tube.
你什么有效的偏微分方程做的是不断掀起一小负责高科技金属管内爆炸。
2
But setting aside that hypothetical, the sheer size of China's population and the explosive growth of its economy are creating significant environmental pressures.
但是让我们把这个假设放到一边，仅仅中国的人口数量和经济的飞速发展就已经给环境带来了重大的压力。
3
Practice shows that adopting methods such as decreasing boring parameter, changing structure ofexplosivesetting and sequence of initiation, etc. can improve blasting effect;