According to the characteristic of red light and infrared light having change after uptake finger,this paper has studied blood signal acquisition system that based on single-chip microprocessor AT89C52.
根据红光和红外光透过手指后光吸收量变化的特点,本文研究了基于单片机AT89C52的血流信号采集系统。
参考来源 - 基于单片机AT89C52的血流信号采集系统的设计—《电脑知识与技术》—2008年第35期—龙源期刊网Objective To observe the effects of red light irradiation on the lung function of the training soldiers.
目的观察经红光照射后战士在运动后肺功能的影响。
参考来源 - 红光照射对战士运动前后肺功能的影响·2,447,543篇论文数据,部分数据来源于NoteExpress
N-COUNT A red light is a traffic signal that shines red to indicate that drivers must stop. (交通灯)红灯
ADJ The red-light district of a city is the area where prostitutes work. 红灯区的 [ADJ n]
Only if the red light comes on is there any danger to employees.
只有红灯闪亮时才有危及职工的险情。
He was killed at an intersection by a driver who went through a red light.
他在十字路口被一个闯红灯的司机撞死了。
你将要面对红灯。
As the taxi stopped for a red light Paul noticed a flower shop.
VOA: special.2009.04.11
So this last version of the red light introduces interesting complications which I don't think should confuse us.
所以,关于红灯的这最后一个例子,让我们思考了平时不会思考的问题。
If we think that our knowledge is positive, we say "red" in a red light means stop.
如果我们主动认知,红灯的意思是停。
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