There exists a least value of the sum of motive power and heating power consumptioncosts in pipelining heated crude oil.
热输原油管道的动力能耗费用与热力能耗费用之和存在一个极小值。
2
The article divided the environmental costs into the four categories: the environment consumptioncosts, the environmental damage costs, the maintenance costs and the environmental costs.
文中把环境成本分为环境消耗成本、环境损失成本、环境维护成本和环境保护成本四大类。
3
The most plausible justification for higher taxes on automobile fuel is that fuel consumption harms the environment and thus adds to the costs of traffic congestion.