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propeller duct /pɹəpˈɛlə ˈdʌkt/ n

中文：螺旋桨导流罩

中文 · 螺旋桨导流罩Español · tubo de la héliceFrançais · tuyère
Meaning：Metal part that surrounds the propeller and increases its power by concentrating its air intake.
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