20xx年四級(jí)考試閱讀理解題目翻譯實(shí)用(編輯修改稿)
2025-08-13 02:21 本頁面
【文章內(nèi)容簡介】 save by mechanical or structural devices.the piano was perfected in the early eighteenth century by a harpsichord maker in italy(though musicologists point out several previous instances of the instrument). this instrument was called a piano e forte (soft and loud), to indicate its dynamic versatility。 its strings were struck by a recoiling hammer with a feltpadded head. the wires were much heavier in the earlier instruments. a series of mechanical improvements continuing well into the nineteenth century, including the introduction of pedals
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