機器
20s
50s
apprentice
asian
caucasian
checking
chinese
cncmachine
discussion
engineer
factory
female
fifties
fourpeople
horizontal
interior
learning
machinemilling
machinery
male
man
measuring
meeting
metalworkshop
modern
occupation
operator
people
person
qualitycontrol
skill
skilled
smallbusiness
technology
trail
training
woman
women
workshop