红外光又叫红外线，是波长比可见光要长的电磁波（光），波长为1毫米到770纳米之间，光谱上面在红色光的外侧。
n. infrared
misc. infrared light
Activated H2O molecules absorb near infrared ray at specific wavelength range. A water content measurement instrument is developed based on this theory.
根据水对特定波长近红外光有活性吸收特性,设计并研制了含水率测量系统。
参考来源 - 基于近红外技术的石油含水测量系统研究·2,447,543篇论文数据，部分数据来源于NoteExpress
上述光源从上述生物体的摄像侧对上述生物体照射红外光。
The light source irradiates infrared light onto the biosome from the shotting side of the biosome.
上图是哈勃太空望远镜拍摄的近红外光图像。
The above image was taken in near-infrared light by the Hubble Space Telescope.
然后它投射出仅在台面之上的水平面的红外光形成的画面。
Then it covers the image in a horizontal plane of infrared light that lies just above the table.
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