| 1. | No quake with a richter scale reading of over 9. 0 has been recorded .
里氏震级表90级以上的地震还没有过记录。 |
| 2. | Many studies are made on the patterns of earthquake occurence in space, time and magnitude .
对地震发生的空间、时间和震级的图象作了许多研究。 |
| 3. | Many studies are made on the pattern of earthquake occurrence in space, time and magnitude .
对地震发生的空间，时间和震级的图像作了许多研究。 |
| 4. | Any earthquake at any distance from a calibrated seismograph is nowadays assigned a magnitude .
现在对于距一标定过的地震仪任何距离处的任何一个地震，都可用一个震级确定之。 |
| 5. | After close observation for premonitory indications, the danger area is narrowed down, and the approximate scale and time of occurrence determined .
在对预兆进行细心观察之后就把危险区缩小，并确定出地震发生的大概震级和时间。 |
| 6. | The tremor was placed at 5 . 6 on the ricther scale
地震的震级被测定为里氏5 . 6级。 |
| 7. | The main quake was estimated at magnitude 6 . 6
据估计主震区的震级有6 . 6级。 |
| 8. | Magnitude and intensity of an earthquake
震级与烈度 |
| 9. | No quake with a richter scale reading of over 9 . 0 has been recorded
里氏震级表9 0级以上的地震还没有过记录。 |
| 10. | So the largest reservoir seismicity will not exceed the historical levels
所以水库诱发地震的最大震级不会高于历史最高水平。 |
