| 释义 |
slack coal
基本例句
粉煤
The technology of coal powder spurted burning is applied in the annealing furnace for low carbon steel wire heated with coal powder.煤粉加热低碳钢丝退火炉采用粉煤喷射燃烧技术，节能效果显著，环境污染有所改善，是值得推广的炉型。
A worker pauses to shield his eyes while moving coal in Ningxia Province.图中是宁夏的一个煤矿，一个工厂在铲煤途中停下脚步，护住眼睛，防止煤屑进入。 |