I have always enjoyed exercising, mostly as a recreational runner, but during the past couple of months I have taken on additional workouts as I prepare for my very first triathlon.
Cardiovascular improvement and muscular power are additional benefits of increased speed that every runner can appreciate, whether racing or not.
提高速度的其它好处是提高心血管能力和肌肉力量，这是所有跑步者梦寐以求的，无论是否参加比赛。
3
Hot runner nozzle is the terminal of the hot runner system, which includes the heating, the end of the gate, which can transfer the molten material to the mold cavity or the additional cold runner.