The cost structure of energy consumption of hot oil pipeline has greatly taken place by the constantincrement of electrovalency and great drawdown of heating oil price.
由于电价不断上涨导致燃油价格大幅度下降,使热输管道的能耗成本结构发生了较大变化。
2
Belonging to or being a series of organic compounds each successive member of which differs from the preceding member by a constantincrement, especially by an added CH2 group.
With the constant growth of mobile subscribers, the demanding for mobile increment service is changing constantly, the most obvious is the demanding for short message service.