normal job正常作业normaladj.正常的；正规的；精神健全的n.常态；标准normal school student师范生normal piano teaching高师钢琴集体课教学Normal blood clotting正常血凝块normal water capacity正常持水量Normal vital capacity正常肺活量normalizing constants标准化常数Normal junior college解析几何normal error recovery正规错误校正normal finite machine非嵌套有穷自动机normal to the surface曲面的法线