- 横断面 héngduànmiàn cross sectionThe flat surface shown by cutting across something; transverse or horizontal section. Also called [[横切面|橫切面|heng2 qie1 mian4]], [[横剖面|橫剖面|heng2 pou1 mian4]], or [[横截面|橫截面|heng2 jie2 mian4]].
- 纵断面 zòngduànmiàn vertical sectionThe surface revealed when an object is cut along its longitudinal axis; longitudinal profile; vertical section
- 断面图 duànmiàntú sectional drawingA drawing that shows the internal shape of an object as if it had been cut through by a flat plane; a cross-section drawing.