COAXIAL shaft, Two shafts rotating one inside the other for rotating the low and high pressure compressors by the low and high pressure engine turbines.
同心轴，两个套在一起旋转的轴。用于使发动机低压和高压涡轮分别带动低压和高压压气机。
2
The project of hole releasing adopted can form a protection shell with low earth stress and fuel gas pressure around the shaft, and the outburst was prevented effectively and economically.
采用钻孔释放方案，在井筒周围形成一个低地应力、低油气压力保护壳，能经济有效地预防突出。
3
Run the operation under the control of optimizing aspect being that lowpressure inclines shaft seal steam supply pressure , shaft seal heater and shaft seal chiller mainly;