open section

• 敞开部分,开口断面

open section的用法和样例：

例句

1. 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。
2. 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。