機器
angle grinder
artistic
auto
automotive
background
ball bearing
blue
box
broken
brown
car
damaged housing
detail
differential
engine
fix
gear
inside
iron
machinebuilding
many
mechanism
metal
mobile
motion
nobody
nut
objects
obsolete
pinion
power
precision
production
rotation
round hole
rusty
service
shaft
side
spare
steel
steel part
technical repair
technology
teeth
tool
transmission
wheel
work