Its fish-like method of propulsion reportedly makes it quieter than a propeller-driven craft of the same size.
及其鱼肉状的推进方法据说使得它比相同大小的一个螺旋桨驱动的工艺更安静。
Cartons categories: -size type knife, knife edge repair, slotted knife, knife windmill shredders, casual propeller plane knife. Pipeline single-blade and CBN grinding wheel, and so on.
纸箱类：裁纸横切刀、修边刀、开槽刀、风车碎纸机刀、散桨机刀。流水线单刀片及CBN砂轮等。
The telescopic propeller-type stirrer adopts a telescopic stirring vane, and leads the size of the stirring vane not to be limited by the size of the opening of a reaction vessel.
本实用新型 采用可伸缩搅拌叶片，使搅拌叶片的大小不受反应容器口大小的限制。
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