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单词 impression
释义 impression
[im`presh·ǝn]
GEOLOGY
A form left on a soft soil surface by plant parts; the soil hardens and usually the imprint is a concave feature.
GRAPHIC ARTS
1. A print made from an engraved plate.
2. A press run or printing of a book.
METALLURGY
A machined cavity in a forging die for production of a specific geometric shape in the workpiece.
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