An earthquake measuring 6.1 on the Richter Scale struck California yesterday.
昨天加利福尼亚发生了里氏6.1级地震。
The Richter Scale is a measure of ground motion.
里氏震级是测量地动的单位。
All were near magnitude 7 on the Richter scale.
这些地震都在里氏7级左右。
How do you give a Richter magnitude to earthquakes that occurred prior to the scale?
如何给里氏震级概念出现之前的地震确定里氏震级？
How do you give a Richter magnitude to earthquakes that occurred prior to the scale?
如何给里氏震级概念出现之前的地震确定里氏震级？
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