[Retracted] Application of Composite Nanomaterials in the Teaching of Piano Touch Technology and Timbre Expressiveness

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Option</td><td class="align_center">Subtotal</td><td class="align_center">Proportion (%)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Interested</td><td class="align_center">90</td><td class="align_center">90.09</td></tr><tr><td class="align_left">Uninterested</td><td class="align_center">3</td><td class="align_center">3.47</td></tr><tr><td class="align_left">Indifferent</td><td class="align_center">6</td><td class="align_center">6.44</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Students’ satisfaction with piano quality after improvement.</div>

Advances in Materials Science and Engineering

tab3

Table 3

Table 3: [Retracted] Application of Composite Nanomaterials in the Teaching of Piano Touch Technology and Timbre Expressiveness 