搜索 - 科创

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完成发动机壳体零部件加工、尺寸外观复检发动机加工完成后，笔者使用游标卡尺对加工产品：喷管外衬、喉衬、堵头、隔热管、法兰盘按照图纸标注要求的GB/T1804-2000m进行校验，经检查除隔热管均在需用范围内

舱段之间的固定则使用植入式M3热熔螺母和M3螺丝二、发动机设计发动机壳体采用140mm长，内径32mm，厚度3mm的7075铝合金管，并在两端各均匀打6个孔，使用12.9级M5机米螺丝固定喷口、堵头

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