Optimized in its structure , and can be used to rough polishing , finshing polishing and 11nall m polishing of all kinds of gyroidal - shape metal ware 2mb414c抛光机是2mb4140系列抛光机第三代产品，它为2mb4140a抛光机的更新换代产品，继续保留2mb4140a的性能特点，但结构更优化，用于各种回转体形状金属器皿的粗精抛光和精细抛光。
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Thirdly , the basic configuration plan of a ship undocking assisted by different number of tugs is given . the relationships among the gyroidal moment , gyroidal time and drag forces of tugs in the process of ship undocking are analyzed . the margin of the tugs " towing forces during the ship undocking and turning process is studied 三、制定了不同数量拖轮协助船舶出坞时的基本布置形式，给出了不同拖轮协助船舶出坞时的拖轮布置示意图，并试验分析了船舶出坞回转力矩与回转时间和拖轮拖力之间关系，并确定了用于船舶出坞回转的拖轮拖力的余度大小。
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