地震记录 seismic record
- 本次地震是有史以来在日本发生的最高等级的地震,并且是从1900年有地震记录以来第五大地震。
The earthquake is thought to be the largest ever to hit Japan, and the fifth-largest since decent records began in 1900. - 据阿拉斯加火山观察记录,每年有五千多次地震记录,绝大多数的地震活动都不很强烈,但阿拉斯加拥有迄今以来最大的一些地震记录。
The Alaska Volcano Observatory records five thousand a year. Most of the shaking is not very strong, but Alaska has had some of the biggest quakes ever recorded. - 研究人员表示,这对建立预警系统而言是个“鼓舞人心的”发现,并计划分析其他记录完整的地震记录中出现的类似信号。
The researchers say this is "encouraging" for the development of early warning systems, and plan to examine the records of other well-recorded earthquakes for similar signals.
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