direct free kick

Based on the theoretical analysis of the track of direct free kick, this article attempted to provide parameters about the power of kicking, the part of the ball being kicked, shooting angel, and the placement of the ball over the wall.

通过对足球任意球运行轨迹的理论分析，计算出球运行轨迹的参数，量化了直接任意球的射门在击球力量、击球部位（偏心距）、射门角度，以及球体绕过人墙后的最终落点。

A Study of the Track of Direct Free Kick in Football

足球直接任意球运行轨迹的理论研究

Direct free kick has been one of the most important means of scoring in football matches.

直接任意球在足球比赛中已经成为重要的得分手段。

On the condition of fast and direct tactics of the opposing-half free kick and corner kick, teams emphasize the change of attacking tactics much more.

各个球队在坚持快速、直接的前场任意球、角球进攻战术前提下，更注重进攻战术的变化。