单叶旋转双曲面
hyperboloid of one sheet of revolution
对转双转子电机
anti-direction dual-rotor motor
反转双转轮
counter-rotating double-rotor
非啮合异向旋转双螺杆挤出机
Non-intermeshing counter-rotating twin screw extruders
回转双曲面
hyperboloid of revolution
回转双曲面滑动轴承
hyperboloidal sliding bearing
啮合型同向旋转双螺杆
intermeshing co -rotating twin -screw
双dq转子电流控制
dual-dq rotor current control
双叶旋转双曲面
hyperboloid of two sheets of revolution
双转超抛物体
hyperparaboloid of birevolution