Age determination data indicate episodic crystallization of uranium minerals.年龄测定数据表明,铀矿物有着不同期的结晶.To make the fissile material, he needs to develop an ability to enrich uranium.为了得到分裂物质，他需要发展浓缩铀的能力。A graben creates a fav...
Acids neutralize alkalis and vice versa.酸能使碱中和,碱亦能使酸中和.What's the scale that's used to compare the strength of acids and alkalis?用何种标准来比较酸碱度？Aluminium and other metals are normally badly corroded by alkalis.铝和其...
She was privately educated at schools in Ireland and Paris.她在爱尔兰和巴黎的学校接受过私立教育。He had privately resolved he would buy her the dress.他暗地里下定决心要给她买那件衣服。Privately, she worries about whether she's really good enough.她暗自担心...