機器
abrasive
automate
bearing
bolt
buffing
close
closeup
cnc
coil
continue
dangerous
efficiency
engineering
equipment
factory
heavy
high
industrial
industry
lapping
line
machinery
manufacturing
mass
material
mechanical
mechanics
mechanism
metal
modern
move
nut
paper
plant
polishing
process
product
production
sand
speed
steel
technique
technological
technology
tool
wire
work
workplace