英文關鍵字
background
technology
design
abstract
heartbeat
military
pattern
illustration
test
pulse
electrocardiogram
power
curve
mapping
sonar
electromagnetic
computer
signal
radio
scan
business
graphic
art
line
net
volume
audio
neon
web
meter
network
template
energy
sound
symbol
graph
vector
cardiogram
oscilloscope
wave
display
monitor
screen
sine
analysis
terrain
scope
heart
color