The technical problem-that the gliding rotary arm after braking is smaller than a small angle-is solved through internal contracting brake device designed by using electromagnetic circuit.
利用电磁电路设计的抱闸装置，解决了回转臂系统刹车后，滑动小于某一小角度这一技术难题。
Surface after the third kick, at as low an angle as possible and continue gliding as far as possible for as long as you can hold your breath.
蹬完第三次腿后浮出水面，保持尽可能小的一个倾角，只要能抑制住呼吸，尽可能远地滑行。
Surface after the third kick, at as low an angle as possible and continue gliding as far as possible for as long as you can hold your breath.
蹬完第三次腿后浮出水面，保持尽可能小的一个倾角，只要能抑制住呼吸，尽可能远地滑行。
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