機器
automatic
close up
cutter
cutting
engine
engineering
equipment
factory
gear
grease
gripper
heavy machinery
holder
hydraulic
industrial
industry
instrument
loader
loading
machinery
machining
manufacture
manufacturing
mechanic
mechanical
mechanism
metal
metalwork
part
parts
pneumatic
power
processing
production
repair
repair of excavator
repairing
safety
steel
technique
technology
tool
tooling
transportation
turning