It is of high accuracy, high speed and flexible adjustable range.
具有精确度高、速度快、可调范围大的优点。
High, middle, low of the tone and echo effect adjustable.
音调的高音，中音，低音和混响效果可调。
Equip the special high-grade performance adjustable piano bench and the piano protective cover.
配有专用的高级弹奏升降琴凳和钢琴保护罩。
Adjustable over high temperature protector and air input valve;
可调式超温保护器与空气入风阀；
Adjustable over high temperature protector and air input valve;
可调式超温保护器与空气入风阀；
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