铁族元素金属及金属互化物矿物
metallic and intermetallic compounds of Fe-group e
纵切剪切机
longitudinally cutting machine
非金属-金属转化
nonmetal-metal transition
金属－金属髋关节假体
Metal-on-metal hip prostheses
变形铝及铝合金
wrought aluminium and aluminium alloys
单层铝金属化式存储单元
single aluminum memory cell
高速铝及铝合金大拉机
high speed heavy-duty aluminium and aluminium alloy wire drawing machine