機器
couple
design
double
energy
engine
engineer
engineering
gear
gears
grinding
hardening
industrial
industry
involute
iron
joint
machining
measure
mechanical
mechanics
metal
metallic
metals
miller
milling
motion
part
parts
precision
production
profile
project
quality
quotes
ratio
service
stainless
steel
strength
teeth
toothing
transmission
turning
work
working