有机械传动式和液压传动式。
It has the mechanical drive type and the hydraulic transmission type.
本实用新型采用液压传动式，它消除了测量过程中的机械振动，速度可以进行调整，提高了测量的精度。
The utility model adopts a hydraulic drive type which can eliminates the mechanical vibration in the course of measuring, can adjust speed, and can increase measuring precision.
在新兴的无杆式飞机牵引车领域中，液压传动的优越性尤为突出。
The advantages of hydrostatic transmission is especially outstanding in the field of towbarless aircraft tow tractor.
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