操作简便：助力滑行，后蹬踏动力杆，即可加速滑行，如驾云般飘逸，有骑马般自在。
User-friendly control: glide with the help the dynamic device, speeding by pedaling the pole, then you will be as graceful as clouds and comfortable as riding horses.
直接把均匀杆纵向振动的数学模型用于弹簧的动力分析。
The mathematical model of longitudinal vibration bars is directly used for the dynamic analysis of helical springs.
这些主动杆的一个统一特征就是它们都没有切断动力的位置。
One unique feature of this active throttle is that it does not have an engine cutoff position.
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