英文關鍵字
alone
apparatus
centimetre
cross
device
engineer
equipment
examine
face
firing
force
glasses
halfbody
hand
head
heating
indoor
industrial
inside
instrument
job
male
man
manometer
measure
metric
one
person
physics
preasure
pressure
pump
round
samara
service
several
single
stand
torque
tube
turn
unit
valve
watch
wire
work