機器
area
balance
beam
big
boom
building site
carrier
cassation
civil engineering
construction
crane
cylinder
detail
dump
duty
equipment
extended
foot
force
ground
heap
heavy
hoist
hydraulic
hydraulic piston
hydraulic ram
industrial
industry
junkyard
lateral
leg
lifter
machinery
mechanical
metal
mobile
outrigger
platform
safety
side
site
stability
stabilizer
steel
strong
support
system
telescopic
weight