How is the spiral rifling in the barrel made? Originally there are four ways a video to take you t

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[@woopiter7259]

19:55 水上飞摩托，我觉得前轮子应该附加一个前端上翘滑板装置，入水后滑板下降低于轮子；动力后轮不装，在水中旋转起到划桨的推进作用，这样的实验可以试试，看能跑多远。

[@Lao-jiu-941]

锯到高压线，那就变成剪高压电喽。

[@GearTiger007]

叉车那个是伪命题 根本不需要这种东西 而且叉车的配重会导致卡车的各种高速行驶的问题 另外转向与悬挂系统也不一样 只能说 如果这么改 两者功能性能都劣化