过程失效模式分析
process failure mode and effects analysis
失效程度的等级
failure mode severity classification
水土流失过程
process of soil and water loss
等熵膨胀过程效率
isentropic expansion efficiency
等熵压缩过程效率
isentropic compression efficiency
多变膨胀过程效率
polytropic expansion efficiency
多变压缩过程效率
polytropic compression efficiency