长输管道气体分输站和城市门站二站合一建设具有非常明显的优越性，但由于种种原因未能推广。
The combined construction of gas transmission substation and city gate station for gas transmission pipeline has obvious superiority, but it can not be spread for different reasons.
长输管道气体分输站和城市门站二站合一建设具有非常明显的优越性，但由于种种原因未能推广。
The combined construction of gas transmission substation and city gate station for gas transmission pipeline has obvious superiority, but it can not be spread for different reasons.
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