久久国产欧美日韩精品,日韩国产精品久久久久久亚洲,99视频精品全部免费免费,91精品国产综合久久走光

地表上直接對著震源的那一點稱為震中.The point on the earth's surface directly above is called the epicenter.這一要求本身表明要用多震源.This requirement manifests itself in terms of multiple sources.震源深度約6哩.The focal depth was about 6 mi....

“震源”的拼音為：zhèn yuán...

“震源”的英語可以翻譯為：[地物] focus，seat，hearth，centre，epicentre ...