coal utilizaton rate

• 煤炭利用率

coal utilizaton rate的用法和样例：

例句

1. This product can increase the rate of roughage, lower investment cost.
   增加刍料利用率，降低饲养成本。
2. And with the increase of the pedestrian volume, the usage rate deceases.
   行人流量和人行道利用率成反比。