Microscopically the ores are medium grained to amorphous.显微镜下,矿石为中粒至非晶质.The only local coarse - grained sand - stones in the uppermost part are important for uranium.仅最上面局部的粗粒砂岩对铀是有利的.Fine - grained clay may settle out i...
"She has a large flat in Mayfair." — "Just so."“她在梅费尔有个大公寓。”——“正是。”Jack drove to Mayfair at breakneck speed.杰克驾车向梅费尔疾驶。A dazzling array of celebrities are expected at the Mayfair gallery to see the pictures.梅费尔美术馆期待星光璀璨的...