raster

n. 光栅
【电】 试映图

ras.ter

n.（名词）
A scanning pattern of parallel lines that form the display of an image projected on a cathode-ray tube of a television set or display screen.
光栅：一种并行线扫瞄的形式，会在电视机或放映屏幕的阴极光线管上投影出影像

来源：
German
German
from Latin r3strum [rake (from the resemblance of the parallel lines to a rake`s path)] * see rôd-
from Latin r3strum [rake (from the resemblance of the parallel lines to a rake`s path)] *参见 rôd-