infra-red range

例句：

1. 1. The infra-red range isused to detect objects that are too smallto be seen with the naked eye.
   红外范围用于探测肉眼无法看见的物体。
2. 2.Infra-red technology is used inmany applications, such as remote control andsecurity systems.
   红外技术在许多应用中都有使用，如遥控和安全系统。
3. 3.The infra-red range can alsobe used to measure the temperature of objects.
   红外范围还可以用于测量物体的温度。