機器
assembly
auto
automobile
automotive
car
car service
dirty
disc
energy
engine
equipment
examining
expertise
garage
gear
gearing
gripping
guitar
horizontal
indoors
industrial
machinery
maintenance
manufacturing
mechanic
mechanical
mechanism
men
metallic
motor
music
musician
occupation
one person
people
playing
repair
repairing
repairman
rotation
service
small business
speed
technology
transmission
transportation
vehicle
wheel