cross section area 横截面积 ; 截面积
effective cross-section area 有效截面面积
area of cross section 横断面面积
ettectlve cross-section area of bolt 螺栓有效截面面积
cross-section area 断面面积
area of wetted cross-section 过水横断面积
cross section area index 横截面积指数
Cable cross-section area 釜接入电缆截面积
actual cross-section area 实际横剖面面积
If those two branches in turn each split into two branches, the area of the cross sections of the four additional branches together will equal the area of the cross section of the trunk. And so on.
这条的规律可以简单描述为：如果一根树干分叉为两个树枝，那么两个树枝的横截面积之和等于树干的横截面积；如果树枝接着分别分叉为两根小树枝，那么这四个次生分枝的横截面积总和仍等于树干的横截面积……依此类推。
Fracture lines start from the outside and spread over the whole cross section, particularly starting in the fillet area and very often after a fatigue crack propagation.
断裂面从轴承部位外部开始延伸到整个截面。典型的是从圆弧部开始，常常会由于疲劳而产生的裂纹的扩展后引起的。
Our homework is figuring out the area of the cross section of a solid.
我们留的作业是求几何体横截面的面积。
应用推荐