他给钢琴校音之后，钢琴的声音完全不同了。
After he tuned the piano, the sound of the piano was entirely different.
牌吉他拾音器、校音器、音箱、效果器、提琴、古筝拾音器等乐器配件，及周边电声产品的研发、生产。
Guitar Equalizers, Tuners, Amplifiers, Effectors, Violin Equalizers and Chinese Zither Equalizers and other related electronic products.
他给钢琴校过音之后，钢琴的声音完全不同了。
他给钢琴校过音之后，钢琴的声音完全不同了。
The voice of the piano seemed different, after his adjusting.
他给钢琴校过音之后，钢琴的声音完全不同了。
The voice of the piano seemed different, after his adjusting.
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