This essay analyses the factors affecting long jump performance and puts forward theory and method to improve running speed.
助跑速度是决定跳远成绩的重要因素。
According to the formula expressing the relation between the contrast for polarization image and the attenuation of water, the farest imaging range with polarization was calculated as 1.
报道了用圆偏振技术进行水下目标成像结果并分析了用圆偏振技术提高图像清晰度的原因:推导了水下目标最远成像距离的计算公式,在衰减常数α为0。