圆环形叶片式空心浮子网刮不断的在网笼上做上下运动，使污损物无法在网笼上附着生存。
The ring-shaped vane type hollow floater scraper continuously conducts the upward and downward movements in the net cage, so that the fouling on the cage can not survive.
圆环形叶片式空心浮子网刮不断的在网笼上做上下运动，使污损物无法在网笼上附着生存。
The ring-shaped vane type hollow floater scraper continuously conducts the upward and downward movements in the net cage, so that the fouling on the cage can not survive.
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