It's part of the very active "Ring of Fire," a zone of major crustal plate clashes that surround the Pacific Ocean.
那里的地壳板块上下交错，是非常活跃的“火山带”的一部分，也是环绕太平洋主要地壳板块相互冲撞的地区。
Plate motion is one of the major dynamic sources for crustal and mantle deformation.
板块运动是地壳和上地幔变形的主要动力来源之一。
Plate tectonics is explained, including motive force of crustal movement, delimitation and boundary of plates, relation be-tween plate tectonics and earthquake.
介绍了关于地球地壳运动的板块学说理论，主要内容是板块运动的动力、板块的划分、板块的分界线，以及板块构造学说与地震的关系。
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