Inside the saltpan, the land surface is uneven. Areas shaped like sloppy teardrops rise above the surrounding plain.
盐田内部的地表凹凸不平，巨大的泪滴状隆起为周围的平原所环绕。
2
The surface of the reinforcement may be plain, ribbed or indented .
钢筋的表面可以是光圆的， 带肋的，或者是锯齿状的。
3
Inflatable membrane reflector is usually non-developable surface, made by a number of plain membranes splicing and paste into the overall membrane surface.