《近代中国对外关系史 The History of Modern China's Foreign Relations》课程教学资源(阅读材料)Cambridge History of China Vol. 11 Ch 4 THE MILITARY CHALLENGE(THE NORTH-WEST AND THE COAST)
Tectonic Earthquakes Most earthquakes occur at plate margins due to tension, compression or shearing forces. Rocks at plate margins are in constant motion and are being pushed, pulled, bent, twisted and folded