incidencen.发生(率)；入射incidence function model关联函数模型incidence measuring gear测攻角机构,冲角测量装置incidence coloring number关联色数incidence of tuberculosis结核病发病率incidence function method关联函数法Incidence characteristics发生特点incidence related factors发生因素incidence of unemployment失业范围incidence of random angle任意角入射incidence loss coefficient入射损失系数