Vanadium seldom forms mineral deposit. It is mainly exist in vanadium titanomagnetite coal gangue and claystone.钒一般很少单独形成矿床, 它主要赋存于钒钛磁铁矿、石煤矿、粘土岩中.Coupled unsaturated flow in claystone has high effect on strength and stab...
1998年的资本外流量为220亿元。There was a capital outflow of $22 billion in 1998.这条河平均流量为每秒二百立方米.The average flow of the river is 200 cubic metres per second.按摩有助于增加身体特定部位的血液流量。Massage may help to increase blood flow to specific are...