从我国的宁夏，经甘肃东部、四川西部、直至云南，有一条纵贯中国大陆、大致南北方向的地震密集带，被称为中国南北地震带，简称南北地震带。该带向北可延伸至蒙古境内，向南可到缅甸。
中国南北地震带是最近提出的概念，有许多问题需要讨论。
The North-South Seismic Zone of China has been proposed only recently. There are many questions regarding this zone which need to be discussed.
建立了南北地震带北段下地壳部分熔融几何形状和分布的模型。
Partial melt models in different geometrical configuration and distribution are established.
这次大地震发生在龙门山的主断裂上，位于我国南北地震带的中段。
The earthquake occurred in the Longmen Mountain main rupture, which is located in the middle section of the north-south earthquake belt in China.
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