英文關鍵字
adult
apparatus
automatic
board
business
caucasian
civil
computer
construction
control
device
display
electronics
energy
engineer
engineering
equipment
factory
fix
flat
helmet
house
indoor
industrial
industry
inspector
job
lab
layout
machine
male
man
manufacturing
occupation
office
panel
plan
portrait
power
professional
project
room
safety
specialist
system
technical
technician
technology
work
worker