infra-

基本解释

It integrates radar, infra-red and visible-light sensors into a single unit.
该系统将雷达、红外线和可见光传感器整合成了一个单元组。
It is easy to set up: simply hook up infra-red laser transceivers on top of two buildings and then align them.
便易安装：将两座建筑顶端的红外线激光收发器简单地连接起来，然后将它们调整成行即可。
Using the natural reflectivity of ceilings and walls, a transmitted infra-red signal can be received by any number of receivers within a room.
利用天花板和墙面的自然反射性，传送的红外信号能够被一个屋子里的所有接收器接收到。

It is very late in the game to begin building a state-by-state campaign infra-structure.
FORBES: Newt: The Vanity Campaign That May Not Have Been in Vain
In the case of lidar, the waves are in the form of an infra-red laser beam.
ECONOMIST: Forest conservation
Night-vision lets the driver see up to five times as far, using a passive infra-red sensor.
ECONOMIST: When crashing is not an option