機器
3d
3d rendering
business
chrome
circle
cog
cogwheel
construction
development
economy
element
engine
engineering
equipment
flag
gear
industrial
industry
innovation
investment
management
manufacture
marketing
mechanic
mechanism
metallic
money
part
pinion
power
production
quality
research
round
saudi arabia
science
service
strategy
success
teamwork
technical
technology
teeth
text
tool
transmission
wheel