人不说得再清楚不过了吗?
Feedstock and fuel, the gray bars represent upstream emissions associated with producing gasoline or electricity (U.S. mix).
Vehicle in use, yellow bar shows tailpipe emissions during vehicle operations.
Feedstock and fuel, the gray bars represent upstream emissions associated with producing gasoline or electricity (U.S. mix).
Vehicle in use, yellow bar shows tailpipe emissions during vehicle operations.