normal airn.标准空气normaladj.正常的；正规的；精神健全的n.常态；标准normal helix of worm螺杆法向螺旋线Normal axon function正常轴突功能normal time response正常时间响应,正常时间特性normal permeabillity正常磁导率normal anticlinorium正常复背斜normal depth of flow正常水深normal precipitation正常降水量normal steel casting普通铸钢normalizing standard正火标准normal accelerograph法向过荷自记器