FTIR光谱表征了ZJ煤去灰前后和溶胀处理效果的结构变化；
The FTIR spectrum shows the ZJ coal's structure changes before and after deashing and swelling;
文中对通风降尘的系统设计、常用的冷却去灰设备的选用与使用进行了评价。
Evaluation has been done upon design of ventilation and dust collect system as well as selection and application of such conventional equipment.
她掸去袖子上的灰末。
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