The structure of the crystallizer propeller is the same as that of Marine propeller.
结晶器搅拌桨采用船用螺旋桨结构，桨叶为复杂曲面。
In the shipbuilding practice, Marine propeller is one of the key installations.
船舶工业中，螺旋桨是船舶的关键装置之一。
In the shipbuilding practice, Marine propeller is one of the key installations.
船舶工业中，螺旋桨是船舶的关键装置之一。
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