英文關鍵字
white
key
isolated
shiny
equipment
metal
silver
plant
steel
industrial
power
technology
cut
machine
gray
motion
construction
industry
work
tool
hole
production
manufacturing
repair
aluminum
engineering
mill
spanner
workshop
worker
Drill
Bit
turning
mechanical
drilling
factory
automated
grinder
shaving
chip
cam
lathe
generate
milling
coolant
metalwork
boring
machining
metalworking
long exposure