中心差 meaning in English

equation of the center

On the basis of discussing the possible aristhemetic for kineticscs indexes in motive video analysis , it was suggested that arithmetics of different quotient of center should be used in calculating the speed and accelerated speed , and the joint angle and segment angle , space angle and projection anagle should be ( differentiated ) so that the indexes could be more comparable
对运动影像拍摄与解析系统中运动学指标的可能算法进行了讨论,建议在计算(角)速度、 (角)加速度等运动学指标时应当尽可能地运用中心差商的算法,在使用运动学指标时应当正确区分关节角和环节角、空间角与投影角两组概念和算法的不同,以使各种不同的解析系统计算出的运动学指标更具有可比性。