公布 中文名称：伞檐 英文名称：umbrella rock 定义：爆破后，台阶顶部残留的未炸掉的岩体。 应用学科： 煤炭科技（一级学科）； 矿井建设（二级学科）；矿井爆破（二级学科） 采煤工作面伞檐是指当采煤机通
权威例句
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Which is not fair, as rock is the umbrella under which so many bands fall and to say the genre as a whole is dead is to put a toe tag on all the subgenres as well.
FORBES: Don't Believe The Billboard Charts -- Rock Isn't Dead