cross - section and profile

• 断面

cross - section and profile的用法和样例：

例句

1. Thrust varies with elevation and is usually maximum at midheight.
   它可以通过断面上的应力的总和求得。
2. 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。