The rotating speed and torque are constant during rotation, as compared with cross-shaft coupler under the same radius of gyration, it raises the driving torque about 50%.
传动时转速、转矩衡定，在同回转直径下比“十字轴式联轴器”提高传动转矩50%左右。
2
It provides access to a large-cross section of a well, instead of just a narrow, vertical shaft.
提供了一个大的油井截面，而不只是一个狭长竖井。
3
Only the temperature measuring equipment of cross beam and the dip shaft are both in good condition, can the model run.