underground nuclear explosion meaning in English

地下核爆炸

North korea says it set off an underground nuclear explosion today monday , a powerful blast that drew immediate , worldwide condemnation
北韩宣布星期一进行了一次地下核爆炸，世界很多国家立即纷纷谴责这次强烈爆炸。
North korea says it set off an underground nuclear explosion today ( monday ) , a powerful blast that drew immediate , worldwide condemnation
北韩宣布星期一进行了一次地下核爆炸，世界很多国家立即纷纷谴责这次强烈爆炸。
U . s . secretary of state condoleezza rice is in south korea thursday for talks on how to enforce u . n . sanctions imposed on north korea following its underground nuclear explosion on october 9th
美国国务卿赖斯星期四在韩国围绕如何执行联合国在北韩10月9号进行核试验后对北韩施加的制裁措施举行会谈。
The seismic signal from an underground explosion can be greatly reduced if the explosive is detonated inside a large cavity rather than being tightly packed into surrounding earth materials . the method is referred to " cavity decoupling " , which is very effective for concealing the underground nuclear explosion
相对于填实、封闭爆炸，地下大空腔中的爆炸可使远区地震波幅度大大降低，因此空腔解耦技术是隐蔽地下核试验的有效手段。