normalairn.标准空气normaladj.正常的；正规的；精神健全的n.常态；标准normalopen valve常开阀normal impedance标准阻抗normal increment法正生长量normal academies师范院校normal data line正常数据行normal shrinkage常态收缩normal readiness正常战备状态normal procedure正常办理手续,常规程序normal flow rate正常流量normal existence[法] 正常生存