n. 横断面； 截面图； [物]有效截面

n. 多样化； 多样性

The cross section of a bridge deck may twist as a result of excessive life. 桥面横断面可能由于过量的升力而发生扭转。

The course concentrates on subsurface structural techniques and the interpretation of seismic sections and cross sections as applied to structural geology and prospect generation. 该课程以地下构造技术以及用于构造地质学和描绘远景的地震剖面和截面图解释为中心。

Traditional plant breeding involves crossing varieties of the same species in ways they could cross naturally. 传统作物育种能自然地在同种物种间相互多样性的杂交。