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一、前言螺旋浆是船舶航行的推进器,小者直径不到10厘米,净重约1公斤,大者直径近10米,净重达80吨。解放前我国没有完整的造舶工业体系,只能为船舶修造生产一些小型螺旋浆。解放后我国造船工业虽有了很大的发展,但大船用螺旋浆的生产是从60年末期才开始的。目
I. Foreword Propeller is the propeller of ship sailing. The smaller one is less than 10 cm in diameter and the net weight is about 1 kg. The larger one is about 10 meters in diameter and weighs 80 tons. Before liberation, China did not have a complete shipbuilding industrial system and could only produce some small propellers for shipbuilding. After the liberation of China’s shipbuilding industry despite the great development, but the ship with propeller production is from the end of 60 years began. Head