Technology design of coal preparation plant.
选煤厂工艺设计。
This article believes that China has become large coal preparation country in the world.
认为我国目前已成为世界选煤大国。
The earth leakage protection device is the necessary device for coal preparation factory.
漏电保护器是选煤厂用电的必要装置。
Coal is an important raw materials for activated carbon preparation.
煤是制备活性炭或活性炭复合物的重要原料。
Coal is an important raw materials for activated carbon preparation.
煤是制备活性炭或活性炭复合物的重要原料。
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