英文關鍵字
accurate
arm
beautiful
business
buttons
clean
closeup
detail
engineering
equipment
factory
handle
heavy
indoors
industrial
industry
instrument
iron
job
large
lathe
line
machine
machinery
manual
manufacture
manufacturing
metal
metalworking
milling
modern
new
old
part
plant
process
processing
production
quality
running
spinning
steel
technology
tool
turning
work
working
workshop