Microscopically the ores are medium grained to amorphous.显微镜下,矿石为中粒至非晶质.Iron ores of greatest economic interest contain magnetite and hematite.最具有经济价值的铁矿包括磁铁矿和赤铁矿.Ores are also being obtained in quantity from other count...
The temperature when we were there was nudging 80 degree F.我们在的时候，那里温度接近80华氏度。British tour companies are nudging clients to travel further afield.英国旅游公司正鼓动客户到更远的地方去旅游。I'm nudging fifty , I'm no chicken.我年近半百, 不...