As one of the two - Catalonia region, Barcelona and Espanyol a large gap.作为加泰罗尼亚地区两强之一, 西班牙人和巴塞罗那有着不小的差距.Barcelona will be hoping to bring the trophy back to Spain — sorry, Catalonia — for the first time.巴塞罗那将有望首次把奖杯捧回西班...
介绍了冲击地压的危害程度, 发生的原因 、 条件及采取的防治措施.The harm of percussive ground pressure, produced reason, conditions and protective measures are introduced.介绍了煤矿发生冲击地压的显现特征.This paper introduces the characteristics of impact earth press...
The invaders put all to the sack.入侵者把所有的东西洗劫一空。He shielded his head from the sun with an old sack...他用一只旧口袋挡住头顶的阳光。An empty sack cannot stand upright.空麻袋,立不直。The poor old sod got the sack yesterday.那位可怜的老兄昨天给解雇了。Francis ...