gratings例句

The light is resolved by prisms, gratings, or by an interferometer.
光线用棱镜、光栅或干涉仪分解.

Many of the roofs were so full of holes that they looked like gratings.
许多屋顶千穿百孔,象筛子一样.

All gratings shall lie flat with no tendency to rock when installed.
安装时所有的栅栏都是平躺的,摇动时不发生倾斜.