Vacuum process Iron plate Frame, Bass section terminated by agraffe, Slow closing damping system Fallboard. Ebony Black Keyboard, German Roslau string, German FFW top hammer.
真空处理的钢板、低音区由搭扣终止、键盘盖带缓降系统。
Vacuum process Iron plate Frame, Bass section terminated by agraffe, Slow closing damping system Fallboard. Ebony Black Keyboard, German Roslau string, German FFW top hammer.
真空处理的钢板、低音区由搭扣终止、键盘盖带缓降系统。
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