英文關鍵字
background
box
builder
building
business
cable
capacitor
construction
current
distribution
electric
electrical
electrician
electricity
energy
engineer
equipment
gear
gloves
guy
hardhat
heat
high
industrial
industry
inspecting
inspector
job
laborer
line
maintenance
man
mechanical
person
power
project
pump
repairman
safety
silhouette
switcher
system
technician
technology
voltage
wiring
work
worker
young