在立体几何中，截面是指用一个平面去截一个几何体（包括圆柱，圆锥，球，棱柱，棱锥、长方体、正方体等等），得到的平面图形，叫截面。
提出了一种轴向移动喷嘴叶片可变几何截面增压器的新结构方案。
A new kind of axially movable vane turbocharger was presented, and its structure was investigated.
通过金相及电镜断口分析，确定箱体失效系铸造缺陷和几何截面差过大所致。
Failure of cast aluminium alloy box was analysed by metallographic and fractographic analysis, and cast defect and variation of cross section thickness were identified as main causes of failure.
具有双孔截面的铝合金挤压管的断面形状满足几何相似定律。
The geometrical similarity law in cross section was satisfied for the aluminum extruded tubes with a double hollow section.
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