When an assumptive cutting plane is passed through an object, the cross section is drawn, which is called a cut. 假想用剖切平面将机件的某处切断，仅画出剖切面与机件接触部分的图形称为断面图，简称断面。
Inoculating effects of the inoculant have been evaluated by experiments of section sensitiveness and inoculation fading. 通过断面均匀性试验和孕育衰退试验检验了多元复合孕育的效果。
