锆英砂65度以上的, ( 铁. 钛含量低的砂 ) 每月大概5000吨左右.Zircon above 65 degrees, ( iron. Titanium low sand content ) about a month about 5000 tons.一种具有弱磁性的黑色矿物,见于变质岩和火成岩中,晶体状铁钛氧化物, 是钛的来源.The mineral form of black iron oxide, Fe 3 O 4 manga...
His eyes were as hard as flint.他的眼神冷酷无情。Ah, he was the man to have a headpiece, was Flint!啊, 福林特可真是个有头脑的人!Under the pressure, the flint crumbled into fragments...燧石在压力的作用下碎成了小块。The Indians chipped flint arrowhead.印第安人凿制燧...