operation net操作网operationn.操作；运转；经营；行动；手术；运算；生效；（复）运筹学operation of opening laboratories开放实验室运行operation with special permission特许经营operation maintenance and support使用维修保障operation of modulus and exponent模指数运算operation decision support system运行决策支持系统operation of push-button switch按钮开关操作operation of symmetric difference对称差运算operation and control information运行控制信息operation speed calculation method运行速度计算法operation of Hasner valve incision

1. Serve the game with the operation of space above and below spiking control direction.
   游戏操作空格发球与扣球上下左右控制方向。