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何谓视野?人在静止状态时,能见范围一般在20～45度之间,称为全视野。这仅表示一个人的能见角度,而非辨认事物的程度。能够辨别视野内人、物细节部分,称为明视野,其范围在50～55度之间。据试验表明,在行驶的汽车中,随着车速的提高,视野会逐渐变小。当车速达到每小时100公里时,明
What is the horizons? People in the quiescent state, can see the general range of 20 to 45 degrees, known as the full field of vision. This only shows one person’s point of view, not the degree of things. Able to discern the field of view, the details of the part, known as the bright field of vision, its range between 50 ~ 55 degrees. According to tests, in the driving cars, as the speed increases, the visual field will gradually become smaller. When the speed reached 100 kilometers per hour, Ming