機器
abstract
accuracy
automotive
build
cement
ceramic
clay
closeup
coil
column
corrosion
design
electric
electrical
electronic
equipment
factory
furnace
grooved
hard
hardness
industrial
industry
instrument
insulate
insulation
iron
look
machinery
manufacture
manufacturing
material
mechanical
part
plant
process
product
production
resistance
structure
technology
tool
wear
workshop