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整体轮毂是长江７５０系列边三轮摩托车的重要零件。对该零件采用整体低压铸造的设备、模具设计、生产工艺及防止铸件缺陷产生等方面作了一些探索与实践，采取了一些改进措施，取得了良好的效果。
The whole wheel is an important part of the Yangtze River 750 series of three-wheeled motorcycle. This part made some explorations and practices on the whole equipment of low pressure casting, mold design, production technology and prevention of castings defects. Some improvement measures were taken and achieved good results.