washing of coal वाक्य
उदाहरण वाक्य
मोबाइल
- 1972 "'Instream analysis "' To speed-up analysis of metals during the recovery process, which used to take up to 24 hours, Amdel Limited developed an on-the-spot analysis equipment called the In-Stream Analysis System, for the processing of copper, zinc, lead and platinum and the washing of coal.
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