機器
abrasive
angle
aperture
craft
dialectic
disk
drill
electric
engineering
factory
finishing
grind
grindingwheels
heat
heavy
hole
horizontal
human
industrial
lathes
machines
machining
make
manual
manufacture
manufacturing
mechanic
metal
mill
milling
objects
plant
polish
polished
polishing
precision
sharpening
skill
sprays from the processing metal
temperature
tool
treatment
up
validity
welding
wheel