Indeed , most of the natural-gas vehicles in use today are in government or corporate fleets that have centralized refueling stations .
事实上，美国路面上大多数的天然气车辆都归属于拥有集中加气站的政府或企业车队。
In addition , iran has built 1500 cng refueling stations and expects to have 2400 in place by early 2012 , according to the conference spokesman .
那次大会的发言人称，伊朗还建造了1500个天然气充气站，并预计在2012年初增加到2400个。
He noted that for many years , the member-nations have not been willing to meet requirements for cargo planes , refueling aircraft , helicopters and intelligence capabilities .
