機器
bolt
boom
building
cabin
closeup
construction
control
crane
engine
engineering
equipment
excavator
fighter
fluid
fork
gear
handle
hydraulic
industrial
industry
instrument
iron
jack
lever
levers
lift
machinery
metal
mobile
move
mover
no people
oil
old
open
operating
operator
pipe
power
pressure
service
steel
technology
tool
transport
truck
valve
vehicle
work