英文關鍵字
business
closeup
commercial
company
construction
department
energy
engineer
equipment
factory
fuel
gas
heavy
huge
hydrocarbon
industrial
industry
inside
kazan
machine
machinery
manufacture
mechanism
metal
net
oil
petrochemical
plant
powerful
process
production
quality
refinery
roller
rotate
shaft
steel
structure
tatarstan
technology
tool
workshop