It is typically caused by prolonged exposure to heat or an infrared source such as a heating pad or hot water bottle.
通常是由于长时间暴露于高温或者红外线辐射源，例如加热垫或者热水瓶。
Terahertz radiation is a newly developed coherent far infrared source, which has been applied in many research fields.
太赫兹辐射是一种新型的远红外相干辐射源，近年来在不同的研究领域得到了广泛的应用。
The human body is a national infrared source.
人体是一个天然的红外辐射源。
Unit of controlling scan mode selects whether visible light source or infrared source is activated.
扫描模式控制单元控制该扫描模块选择性地激活该可见光源与该红外光源以进行扫描。
The instantaneous signal amplitude can be increased due to the impulse drive characteristic of the infrared source, the adaptability to the surface condition of the workpiece can be thus improved.
利用光源的脉冲驱动特性，加大了瞬时信号功率，改善了光学传感器对工件表面的适应性。
The instantaneous signal amplitude can be increased due to the impulse drive characteristic of the infrared source, the adaptability to the surface condition of the workpiece can be thus improved.
利用光源的脉冲驱动特性，加大了瞬时信号功率，改善了光学传感器对工件表面的适应性。
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