英文關鍵字
bolt
bright
closeup
connect
construction
energy
environment
equipment
extreme
facility
factory
flange
fuel
gas
gascompressor
gasoline
industrial
industry
iron
kazan
large
machinery
manufacturing
modern
natural
oil
petrochemical
petroleum
pipe
pipeline
plant
power
process
production
pump
refinery
station
steel
structure
system
tatarstan
transport
tube
workshop
yellow