So tell me how your dry cleaning process works?
那你告诉我你们的干洗程序是怎样的？
Clean coal: coal produced by a cleaning process.
净煤：经清洗工序生产出来的煤炭。
The cleaning process: the controlling time is adjustable.
此超声波清洗机清洗过程，控制时间可调。
But that's only a very small part of the cleaning process.
但是，这只是一个非常小的清洗过程的一部分。
Cleaning process can be observed through window on machine.
清洗室装有可视化窗口，清洗过程可观察。
Cleaning process can be observed through window on machine.
清洗室装有可视化窗口，清洗过程可观察。
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