问题:转击器凸起部分下部在顶杆后边粘有一小块红呢,目的是使顶杆复位时(...
Friday, September 16, 2022
Sunday, December 31, 2023
问题:关于弦码的描述不正确的是()。A、弦码通常采用硬质木材B、弦码是用来把弦的振动传播到音板C、弦码与音板牢固地结合D、弦码的作用之一是过滤泛音...
Sunday, October 15, 2023
Friday, September 16, 2022
Sunday, September 11, 2022
Sunday, September 11, 2022
Sunday, October 15, 2023
Friday, September 16, 2022
Sunday, September 11, 2022
问题:三角琴单根弦的最大张力约为()公斤;立式琴单根弦的最大张力约为130公斤....
Tuesday, March 26, 2024
Wednesday, September 13, 2023
Sunday, September 11, 2022
Saturday, March 9, 2024
Wednesday, December 7, 2022
问题:中型钢琴的最低音的琴弦长度大约为()毫米,最高音的琴弦长度大约为()毫米。...
Tuesday, December 12, 2023
Friday, April 5, 2024
问题:踏板行程的大小取决于踏板踏下的()和踏板横梁()的左右位置。...
Saturday, July 15, 2023
Wednesday, January 10, 2024
Friday, September 16, 2022
Sunday, July 9, 2023