Even making an aluminium engine block can take only a few minutes.
即使是制造铝发动机外壳也仅仅花费几分钟时间。
Aluminium borate melting block was prepared by the combination of boric acid, anhydrous alum and potassium sulfate.
采用硼酸和无水明矾及硫酸钾压块、焙烧、制备硼酸铝熔块。
The fixed dummy block for extruding aluminium materials developed by USSR, USA and Japan are reviewed.
对前苏联、美国和日本铝挤压工业开发的固定挤压垫装置进行了评述；
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