单词	Richter scale
释义	Richter scale noun Rich·​ter scale ˈrik-tər-  : an open-ended logarithmic scale for expressing the magnitude of a seismic disturbance (such as an earthquake) in terms of the energy dissipated in it with 1.5 indicating the smallest earthquake that can be felt, 4.5 an earthquake causing slight damage, and 8.5 a very devastating earthquake Word History Etymology Charles F. Richter First Known Use 1936, in the meaning defined above
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