The sidewall formula of PCR tire was modified to improve the high speedendurance performance.
对半钢子午线轮胎胎侧胶配方进行改进，以提高轮胎的高速耐久性能。
2
In speed skating sports, the coordination between breath and movement is important to the skating speed and speedendurance.
在速度滑冰运动中，如何使呼吸与运动动作相配合，是一个关系到滑行速度和速度耐力的一个重要问题。
3
Fortunately, you can have it both ways. You can follow training plans that build the length of your long runs, and others that improve your speed-endurance.