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In a cooperation between the aerospace industry's No. 608 Aeroengine Research Institute and the South Motive Power and Machinery Complex, there has been successful research and an associated promoting of titanium alloy integrated centrifugal impeller 5 coordinate or axis computer assisted manufacturing (TICAM5NC) technology. Along with this, in November of 1988, it smoothly went through a ministry level technology evaluation. As far as the successful research on this new item of technology is concerned, it breaks through a big stumbling block in the process of production and test manufacture of medium and small model aviation engine centrifugal gas compressors. As far as a speed up in the development of our country's medium and small model aviation motive technology is concerned, the test manufacture of high efficiency, high pressure ratio centrifugal gas compressors will lead to a serious promotional effect., Translation of Guoji Hangkong (China), n9 p37-38, 1989.