齒冠角 的英文怎麼說
中文拼音 [chǐguānjiǎo]
齒冠角
英文
addendum angle-
Soundboard ribs are of spruce and are fully let - in to a notched liner ( uprights ) and the rim ( grands ) to support the soundboard crown and prevent the piano from losing its tone
音板肋木也由雲杉製成，完全嵌入鋸齒狀襯墊（直身鋼琴）或琴身（三角鋼琴） ，用以支撐音板的冠狀頂部和穩定鋼琴音質。
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