We reversed our first man-made global atmospheric crisis by banning chlorofluorocarbons -- by 2015, the Antarctic ozone hole will have shrunk by nearly 400, 000 square miles.
我们通过禁止含氯氟烃安然度过了第一次人为的全球大气危机——到2015年，南极臭氧空洞的面积将缩小近400,000平方英里。
This paper presents the method and result of load test on supporting layer of man-made hole pile.
本文介绍了人工挖孔桩桩端持力层载荷试验方法及试验结果。
She also got some of the first chemical measurements that showed man-made chlorofluorocarbons caused the hole.
她还掌握一些先进的化学测量方法来说明臭氧洞是由人造含氯氟烃造成的。
应用推荐