地形和地表结构的英文：
topographical and surface structures
a. 地质的;地学的
Topographic Command Satellite
地貌俯瞰卫星
soundness of the rock surface must be included in the topographic study.
岩石表面的坚固性，必须包括在地形研究之内。
soundness of the rock surface must be included in the topographic study
岩石表面的坚固性，必须包括在地形研究之内。
n. 表面；表层；面；顶面；操作台
v. 升到水面；露面；醒来；铺设
impress a mark on [ upon ] a surface=impress a surface with a mark
在表面上打记号
He finally surfaced at midday.
他终于在中午时醒过来了。
The towers are surfaced with steel plates.
在塔面上加了一层钢板。
n. 结构；构造；建筑物
v. 构造；组织
Involved or intricate, as in structure; complicated.
复杂的在结构中牵扯较多的或错综复杂的；复杂的
equiaxed grain structure
等轴结晶构造
The bridge is a frail wooden structure.
这座桥的木质结构，很不结实。