Ma2 supersonic nozzle and working section are designed ;
设计了马赫数2超声速喷管及实验段；
Effect of Heat , Noise and Combined Factors on Ca2 + , Ma2 + Content of Cerebral Mitochondria in
高温、噪声及复合因素对大鼠脑线粒体Ca~（2＋）、Mg~（2＋）含量的影响
ma2