electric eye

基本解释

The doors swung open after a photocell— an" electric eye"— spied my approach.
一颗光电池（电子」）测到我的靠近后敞开大门。
Coverter speed regulator adjusts without grades with automatically following of German Si Electric Eye.
变频调速无级调整，德国施克电眼自动跟踪。
It adopts exceeded luminosity lamp-house, electric eye sensor, slot transfer machine, LCD, keystroke, minitype.
该仪器采用高亮度冷光源、光电池检测、带槽式机构、LCD显示、按键、热敏微型打印机。

The electric guitar I chose was one I had had my eye on in the window of Bell's, where we had got the Hoyer.
NPR: Eric Clapton Looks Back at His Blues Roots
The i8 in particular is an eye-catcher: It has upward-swiveling windowless doors and electric kickboards stowed under a transparent tailgate.
FORBES: Live At The Los Angeles Auto Show: The BMW i8 Concept