cross-section
/ˌkrɔs ˈsekʃn; ?@ ˌkrɔ:s; `krɔs`sɛkʃən/ n
1 (picture of the) surface formed by cutting through sth, esp at right angles 截面（图）; 断面（图）; 剖面（图）
examining a cross-section of the kidney under the microscope 在显微镜下检查肾的切面
The girder is square in cross-section. 这个大梁的截面是方形的.
2 typical or representative sample 典型; 样品
a cross-section of the electors, population, etc 选民、 全体居民等中的一群具有代表性的人物
a broad cross-section of opinion 具有广泛代表性的看法.