infrared sensor
[英][ˈinfrəˈred ˈsensə][美][ˌɪnfrəˈrɛd ˈsɛnsɚ]
红外线敏感器（装设在轨道上以测量车轴温度）,红外传感器;
例句:
1.
Silver chloride substrate; infrared sensor; thio compounds; silver materials.
氯化银基材;红外光感测器;硫基化合物;银材.
2.
May: oh, no, it has the infrared sensor; you just need to put your hands under theair outlet.
阿美：噢,不是,那是红外线感应的,你把手放到出风口就行了.