英文關鍵字
adjustment
auto
automobile
automotive
car
change
check
clean
control
damage
diagnosis
disassembly
engine
failure
fix
hand
holding
human
industrial
industry
inspection
labor
machine
machinist
maintenance
man
manual
measure
mechanic
modern
motor
occupation
oxygen
part
performance
person
problem
repair
replace
service
shop
steel
technician
technology
transport
transportation
valve
vehicle