{HEAD ~ a variable throttle mechanism} installed in said pump to change a flow rate of {TAIL ~ said discharged oil} from said pump to said hydraulic device 
{ HEAD ~ a variable throttle mechanism } installed in said pump to change a flow rate of { TAIL ~ said discharged oil } from said pump to said hydraulic device
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH