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...
如果孩子看到hear这个词，我们就应该告诉他这是hearing和hears的词干。If the child sees the word "hear", we should show him that this is the base word in "hearing" and "hears".在构词法中, 语素被分为词根, 词干, 词基和词缀.In formation, morphemes are labeled root, stem,...