ObjectiveTo evaluate the diagnostic value of multi-slice CT (MSCT) and multi-dimensional reconstructions for congenital pulmonary atresia (PA).
目的探讨多层螺旋CT（MSCT）多维重组技术对肺动脉闭锁（PA）的诊断价值。
2
The error value by error formula calculated is used which adjusts adjustment framework of machine, that can get purpose of decreasing surface error and guaranteeing surface precision of pa...
并以误差公式计算出的误差值来调整机床的微调机构，可达到减少面形误差，进而保证面形精度的目的。
3
This pa- per is of value to prevent road asphalt early aging research in the northwest intensive ultraviolet radiation region of China.