機器
anchor
antique
chain
connection
damage
dirty
element
energy
engineering
giant
heavy
industrial
link
lock
long
manufacturing
mechanical
metallic
movement
nautical
operation
power
pressure
process
production
pump
roller
rotation
rough
round
rust
safety
section
security
service
ship
speed
spin
steel
strength
structure
system
technical
transfer
transmission
tube
vehicle
weight
wheel