| 单词 | powder-mill |
| 释义 | Definition of powder-mill in English:powder-millnoun historical
OriginMid 17th century. Compare French moulin à poudre machine for grinding an explosive mixture of saltpetre, sulphur, and charcoal. Definition of powder-mill in US English:powder-millnoun historical
OriginMid 17th century. Compare French moulin à poudre machine for grinding an explosive mixture of saltpetre, sulphur, and charcoal. |
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