Vaccination and other prophylactic measures can be carried out.可以采取疫苗接种和其他预防措施。Anyone who wants to avoid the flu should consider getting a vaccination.如果不想得流感，就该考虑接种疫苗。Smallpox can be contained by vaccination.种牛痘疫苗可以控制住天...
圆筒洗矿机是平果铝矿山主要洗矿设备之一.Drum washer is one of main washing equipments in Pingguo Bauxite Mine.受铝矿石资源特性的制约,决定了山西铝厂采用铝土矿生产氧化铝的能耗偏高.The relatively high energy consumption in alumina production is all according the characteristi...