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：2025/11/21
black powder
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A simple form of gunpowder, consisting of a mixture of saltpetre, charcoal, and sulfur.
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black powder
The historian carefully explained how black powder, a mixture of saltpetre, charcoal, and sulfur, changed the course of warfare.
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The historian carefully explained how black powder, a mixture of saltpetre, charcoal, and sulfur, changed the course of warfare.
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