As shown in the FIG 2c, a first insulation layer 35 encloses {HEAD ~ the entire oil tank} 17, which also contains {TAIL ~ the electric motor} 15 and the hydraulic pump 16 
As shown in the FIG 2c , a first insulation layer 35 encloses { HEAD ~ the entire oil tank } 17 , which also contains { TAIL ~ the electric motor } 15 and the hydraulic pump 16
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH