研究了盐酸直接浸取钛铁矿的浸取动力学.The reaction kinetics leading ilmenite directly by acid was investigated.含铁氧化物的矿物有磁铁矿、赤铁矿、褐铁矿、钛铁矿等.I. oxid, include magnetic iron orered iron ore , brown iron ore, etc.主要伴生矿物为磁铁矿、钛铁矿, 少量黄铁矿和微量黄铜矿.Assoc...
他们兑换旅行支票时依据的汇率跟兑换现钞时不同。They exchange traveller's cheques at a different rate from notes.这些指责是依据二手信息提出的。The denunciation was made on the basis of second-hand information.依据《宪法》规定，不能一罪两判。Under the Constitution, you ca...