open section的用法和樣例：
例句
- When an assumptive cutting plane is passed through an object, the cross section is drawn, which is called a cut.
假想用剖切平面將機件的某處切斷，僅畫出剖切面與機件接觸部分的圖形稱為斷面圖，簡稱斷面。 - Inoculating effects of the inoculant have been evaluated by experiments of section sensitiveness and inoculation fading.
通過斷面均勻性試驗和孕育衰退試驗檢驗了多元複合孕育的效果。
