Clean coal: coal produced by a cleaning process.
净煤：经清洗工序生产出来的煤炭。
The "Remove a cleaning cartridge" operation is complete.
完成“取出一个清洗磁带”操作。
It also has a cleaning and flushing system to keep the pipe clean.
该管道还自带清洗和冲水系统，来保持管道的干净。
There will be a small insulating glass production line with a cleaning and drying machine.
搭配一台清洗干燥机即可形成一条小型中空玻璃生产线。
There will be a small insulating glass production line with a cleaning and drying machine.
搭配一台清洗干燥机即可形成一条小型中空玻璃生产线。
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