In {TAIL ~ order} to displace the element {HEAD ~ the actuator} is impinged upon by a control voltage  
In { TAIL ~ order } to displace the element { HEAD ~ the actuator } is impinged upon by a control voltage
OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH