Q:What does maglev mean? A:Maglev is short for magnetic levitation(漂浮),which means that these trains will float over a guideway(导轨)using the basic principl
Monodispersed magnetite Fe3O4 and hematite α-Fe2O3 nanocrystals have been grown in co-solvents of alcohol and water. Either the shape or the size of the nanocr
Objective:Reduction in child morbidity and mortality require improved knowledge about hygiene,baby feeding and childrearing practices,especially by mothers in l