单词 | tympan |
释义 | tym·pan ![]() n. 1. Printing A padding, as of paper or cloth, placed over the platen of a press to regulate the pressure on the sheet being printed. 2. Architecture A tympanum. 3. A tightly stretched sheet or membrane, as on the head of a drum. [Middle English timpan, drum, from Old English timpana, from Latin tympanum, from Greek tumpanon.] |
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