Ⅴ带为全球海岭地震带。
The fifth belt ( V ) is the global oceanic ridges .
除全球海岭地震带外，全球四大地震带都发生了7级以上地震。
Excepting the global ocean-ridge seismic belt , large earthquakes of magnitude 7 or over occurred on the four large seismic belts of the globe .
海岭地震带