Particular structure of regrinding chamber with a enlarged rotordiameter contributes to a higher linear velocity and improve grinding efficiency by 20%.
特殊结构的二次粉碎室，加大设计的大转子直径，获得更高的锤端线速度，粉碎效率提高20%；
2
Rotor design is comprised of some factors such as hub configuration, blade number, rotordiameter, rotor solidity and airfoil which have effects on helicopter performances.
旋翼设计包括桨毂构型、旋翼桨叶片数、旋翼直径、旋翼实度、翼型剖面等一系列影响直升机性能的因素。
3
It comes just six months after Norway promised the world's largest wind turbine, with its 145 meter rotordiameter, to be built and contributing to the country's power grid by 2011.