防暴警察向人群中投掷了催泪瓦斯罐和烟幕弹。Riot police hurled tear gas canisters and smoke bombs into the crowd.军队用炮火和催泪瓦斯予以反击。The army responded with gunfire and tear gas.警察使用了催泪瓦斯攻入屋子以后，恐惧的一天结束了。The day of terror ended after police used tea...
Air that is expelled from the lungs passes through the glottis.空气从肺部输出,首先通过声门.Direct laryngoscopy revealed narrowing of the glottis with diffuse ulcerative necrotic tissue.以直达式喉镜发现声门狭窄与广泛性溃疡坏死组识.Glottis epiglottis plays ...
John Bardeen was also co-developer of the theory of superconductivity.约翰·巴丁也是超导电性理论的创立者之一。Invention of the point contact transistor by Brattain and Bardeen. ( December 23 ).12月23日, 布拉顿 和巴丁发明点式电视晶体管.Inventors were John Ba...