wall_paper--->machins


watch
alarm_clock(2) 腕時計(1)
etc(5)  
machine
steelyard(1)  
computer
FD(1) プリント基板(1) 
aircraft
rocket(2) propeller-aircraft(2)
ballon(1) UFO(1)
helicopter(1) etc(5) 
vehicles
automobile(2) bus(1)
bicycle(4)  
speacial_car
train(2) train(1)
ambulance(1) 戦車(1) 
vehicles(sea)
yacht(3) ship(3) 
machins
robot(1) 歯車(1)
etc(39)