field of view
英[fi:ld ɔv vju:]
美[fild ʌv vju]
视场;视界
[例句]Kepler works by monitoring the thousands of stars in its field of view for tiny changes in brightness.
开普勒望远镜的工作原理是监测其视野内成千上万个恒星的亮度的微小变化.