某厂用AZ 91d镁铝合金生产的手提计算机机壳，经精密铸造而成。
A kind of pocket computer casing, made of AZ91D alloy, is manufactured by precision casting.
对用真空差压铸造法生产的铝合金铸件性能进行了研究，从理论和实践量方面论述了其较好的铸件内在性能。
The internal quality of aluminum alloy castings that were produced by Vacuum Differential Pressure casting was studied with both theory and practice.
结合铝合金半连续铸造的生产工艺，介绍了铸造铝熔体液面的控制措施以及每种控制措施的实践效果。
Aluminium metal level control measures and practice effects during casting are introduced in detail according to the processes of aluminium semi-continuous DC-casting.
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