機器
arm
background
big
black
blue
boom
cable
cargo
chain
color
construction
crane
crane boom
engineering
equipment
halyard
heavy
high
hoist
hoisting
hook
hydraulic
industrial
industry
isolated
lift
lifting
machinery
metal
mobile
power
pulley
pulley rope
pulley ropes
red
rope
ropes
safety
sky
steel
structure
tall
technology
telescopic
transport
transportation
white
winch
work