Therefore, even when {HEAD ~ the operation speed} of {TAIL ~ the operating portion} is any operation speed, such as 0, it is possible to effectively prevent the oscillations and vibrations from being applied to the operating portion by the operator due to the oscillations and vibrations of, for example, the construction machinery 
of
Therefore , even when { HEAD ~ the operation speed } of { TAIL ~ the operating portion } is any operation speed , such as 0 , it is possible to effectively prevent the oscillations and vibrations from being applied to the operating portion by the operator due to the oscillations and vibrations of , for example , the construction machinery
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH