英文關鍵字
check
control
detector
device
electronic
equipment
grass
guard
hand
held
help
inspect
inspection
man
metal
military
object
police
portable
safety
scan
scanner
search
security
sensor
technology
tool
treasure
英文關鍵字
check
control
detector
device
electronic
equipment
grass
guard
hand
held
help
inspect
inspection
man
metal
military
object
police
portable
safety
scan
scanner
search
security
sensor
technology
tool
treasure