一根确定长度、松紧和密度的弦只能发出某某音。每条线的操作是自如的。
For a string of specified length, tautness and density only certain note can be generated.
铍音膜在全世界范围内流行，采用了黄金蒸发法制作的高密度，高纯度的铍音膜创造出了最理想的音质，并应用在了GF - 1上。
The beryllium diaphragm that took the world by storm continued to evolve, adding gold evaporation to the high density, high purity casting beryllium diaphragm to produce ideal tone. Used on the GF-1.
铍音膜在全世界范围内流行，采用了黄金蒸发法制作的高密度，高纯度的铍音膜创造出了最理想的音质，并应用在了GF - 1上。
The beryllium diaphragm that took the world by storm continued to evolve, adding gold evaporation to the high density, high purity casting beryllium diaphragm to produce ideal tone. Used on the GF-1.
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