英文關鍵字
aircraft
assembly
aviation
blade
bright
channel
dazzling
electric
energy
equipment
factory
fan
huge
industrial
industry
light
making
man
mechanism
metalworking
motor
parts
plant
power
process
production
repairman
rotating
sparkles
sparks
splash
technology
unit
weld
welder
welding
work
worker
working
workman
workshop