According to the design requirements of the rotary water joint,the types of the sealing washers and rotary axis are examined and compared in detail.Key techniques and their solutions,appli-cation areas and application prospects are suggested.%针对旋转关节的设计要求,对设计方案进行了详细的论证比较,提出了关键技术及解决办法、应用范围和推广前景。
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