charcoal ash
英 美
But if you burn the wood too much, charcoal will change into white. The white stuff is ash.
但是如果你烧过头了，木炭就会变成白色，白色的东西就是灰了。
A new way of preparing big modulus sodium silicate and active charcoal from rice dusk ash was described.
本文提出了由稻壳灰制高模数的水玻璃和活性炭的新工艺。
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