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；
The fixed dummy block for extruding aluminium materials developed by USSR, USA and Japan are reviewed. The domestic fixed dummy block are introduced.
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；介绍了国内研发的铝挤压用固定挤压垫装置。
The problems concerned with fixed dummy block in production are discussed. Matters of efficiently using fixed dummy block are explained in equipment design manufacturing and application.
叙述了铝挤压固定挤压垫在生产中经常遇到的问题，从设备、设计、制造和使用环节说明有效使用固定挤压垫应注意的问题。
The problems concerned with fixed dummy block in production are discussed. Matters of efficiently using fixed dummy block are explained in equipment design manufacturing and application.
叙述了铝挤压固定挤压垫在生产中经常遇到的问题，从设备、设计、制造和使用环节说明有效使用固定挤压垫应注意的问题。
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