Gas is the blood of modern industry.It is in extensive use in almost every sector of the national economy,such as machinery,petroleum,chemical engineering,fire protection,medical care,energy,urban construction,food,me...Gas is the blood of modern industry.It is in extensive use in almost every sector of the national economy,such as machinery,petroleum,chemical engineering,fire protection,medical care,energy,urban construction,food,metallurgy,electronics,automobile,and residential living.It is safe to say that where there is industry,there is gas.展开更多
文摘Gas is the blood of modern industry.It is in extensive use in almost every sector of the national economy,such as machinery,petroleum,chemical engineering,fire protection,medical care,energy,urban construction,food,metallurgy,electronics,automobile,and residential living.It is safe to say that where there is industry,there is gas.
