In {HEAD ~ a casing}, two fixed scroll members are provided on the axis of the casing, and an electric motor is provided between {TAIL ~ the fixed scroll members} 
In { HEAD ~ a casing } , two fixed scroll members are provided on the axis of the casing , and an electric motor is provided between { TAIL ~ the fixed scroll members }
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL