機器
accuracy
actuator
alarm
brass
clock
clockwork
cogs
concept
design
detail
dirty
engine
engineering
equipment
gear
gold
gold color
industrial
industry
inside
instrument
isolated
machinery
macro
measurement
mechanic
mechanical
mechanism
metal
minutes
old
part
period
power
precision
retro
spring
steel
technical
technology
time
turn
vintage
watch
wheel
work
wristwatch
yellow