复数：upright pianos
n.a piano with a vertical sounding board
同义词：upright
Upright piano
Upright piano
Upright piano
Ernst Christian Friderici
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B100 - Basic Piano Tuning Vertical Piano Technology
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Perception of Interactive Vibrotactile Cues on the Acoustic Grand and Upright Piano
Subjective Assessment of Upright Piano Key Vibrations
A study on radiation pattern and radiation efficiency of an upright piano soundboard
Experimental study of nonlinear phenomena in an upright piano.
Repetition action mechanism for an upright piano
Improving the upright piano
