機器
underwater
aluminium
automotive
boat
boat motor
boat propeller
boating
construction
cylinder
detail
drive
engine
engineering
equipment
gear
hub
hydraulic
industrial
industry
maintenance
marine
mechanic
mechanism
metal
modern
motor
motorboat
nautical
part
power
powerboat
propeller
propulsion
repair
service
ship
speedboat
technical
technology
tilt
transmission
transom
transport
transportation
vessel