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
反转双重线 inversion doublet
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
高低速双转盘水力碎浆机 Hi-lo pulper
高浓双转子碎浆机 high-density bi-pulper
回转双曲面 hyperboloid of revolution
回转双曲面滑动轴承 hyperboloidal sliding bearing
回转双叶双曲面族 hyperboloid family
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
双转单电路 duty-buffer
双转的 birotary
双转点水准测量 bilateral leveling; double line leveling
双转动域 dual-rotating field
双转发动机 birotary engine