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applying felt造句

"applying felt"是什么意思

造句與例句手機(jī)版

Alfred Dolge wrote Mathushek perfected a simplified press for applying felt covering to piano hammers in 1850, and in 1851 he patented a method for overstringing in cast iron frame square pianos to allow a greater number of strings with larger diameters.
It's difficult to see applying felt in a sentence. 用applying felt造句挺難的

相鄰詞匯

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