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13
2019-02

German Space Center and 3D systems work together to design liquid rocket engine injector

2019-02--13
Through metal 3D printing design, the engine injector of smile project has achieved excellent mixed combustion efficiency and lightweight characteristics, and the number of parts has been significantly reduced after integration, with 30 scattered parts integrated into an integral part
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13
2019-02

Understanding the global semiconductor pattern

2019-02--13
At present, China's vertical division of labor mode of the chip industry chain has taken shape, the upstream, middle and downstream of the industry has been opened up, and a number of strong representative local enterprises have emerged. Integrated circuit is a basic and leading industry, which involves national information security. To make the integrated circuit industry bigger and stronger has become the strategic leader of national industrial transformation.
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13
2019-02

On the acquisition of vacuum system

2019-02--13
The vacuum pumps used in vacuum system include diffusion pump, mechanical pump, rotary vane pump, roots increasing pump and dry pump. In order to obtain better vacuum effect and pumping rate, vacuum pump combination unit is usually used.
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