Possessing a speed blades gap adjusting device, permit to adjust steplessly the blades gap.
刀片间隙快速调整机构，可对刀口间隙进行无极调整。
And there is a large circular gap at the centre of the blades, which is safer for Marine life.
在叶片中心有一个大的圆形空间，可以让水中生物安全通过。
And there is a large circular gap at the centre of the blades, which is safer for Marine life.
在叶片中心有一个大的圆形空间，可以让水中生物安全通过。
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