英文關鍵字
apparatus
board
business
button
closeup
control
conveyer
conveyor
counter
device
digit
engineering
equipment
exhibition
frame
gear
handle
hardware
indoor
industry
knob
line
machine
manufacturing
mechanical
mechanism
metal
motion
nobody
noone
number
paper
polygraph
polygraphinter
polygraphy
press
publisher
publishing
shaft
technology
tilt
unit
wire
work