Spiral propeller ships, also known as screw propeller ships, are a type of vessel that uses a rotating propeller to generate thrust and propel the ship forward through water.
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CIC Luoyang Heavy Machinery، Co.، Ltd: نحن مطحنة الكرة المحترفة ، الفرن الدوار ، قطع الغيار ، مطحنة الكرة الشبكية ، الشركات المصنعة للتبريد الدوراني في الصين ، متخصصة في تقديم منتجات عالية الجودة.
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Cement manufacturing: components of a cement plant. ... For a more detailed account of the cement production process, see the Understanding Cement book.
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