英文關鍵字
3d
auger
background
bit
borer
chromakey
construction
cutter
drill
drilling
engineering
equipment
fastener
fix
forstner
green
groove
hard
hole
icon
illustration
industrial
industry
instrument
inventory
iron
isolated
isometric
machine
machinery
mechanism
metal
object
part
perforate
pin
rivet
screen
screw
service
sharp
shiny
sign
socket
spare
steel
supplies
support
symbol
technology
tool
work