An earthquake whose epicentre is more than 1000 km from, but detectable at, a recording seismometer. Earthquakes whose epicentres are closer than this are regarded as ‘local’ events.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。