機器
arm
big
building
business
cable
cargo
city
concrete
construction
crane
danger
development
electrical
engineering
equipment
heavy
high
hydraulic
industrial
industry
iron
layer
lift
lifting
machinery
mechanical
metal
mobile
modern
new
pole
power
separated
site
sky
steel
structure
tall
technology
tower
transportation
truck
urban
utility
vehicle
weight
white
work