running cost

• 经营费用,运转成本,操作成本

running cost的用法和样例：

例句

1. By using the new method,the mild condition,shorter reaction time,lower cost and higher yield were achieved.The waste water wase reduced.
   结果表明该法具有反应条件温和，反应时间短，操作成本低，废水减少和收率高等优点。