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。

《柯林斯英汉双解大词典》

The Richter Scale is a measure of ground motion.

里氏震级是测量地动的单位。

《牛津词典》

The earthquake registered 3 on the Richter scale.

地震震级为里氏3级。

《牛津词典》

The initial quake registered at magnitude 7 on the Richter Scale and was followed by several other shocks, including one that measured 5.9.

VOA: standard.2010.01.13

The initial quake registered at magnitude 7 on the Richter Scale and was followed by several other shocks, including one that measures 5.9.

VOA: standard.2010.01.12

One measured 6.8 on the Richter scale, a major tremor in its own right.

CNN: Shocks and Aftershocks

In Shizuoka some 100 kilometers to the west, the latest quake measured 6.4 on the Richter scale.

FORBES: In Tokyo New Earthquakes, Blackouts Add To Misery

One shook the Ibaraki Prefecture mid-morning Monday registering a 5.0 on the Richter scale, Kyodo news reported.

FORBES: China Stocks Resilient Early Monday While Nikkei Below 10k