叶片焊接视频链接：https://v.youku.com/v_show/id_XNDQ1NjU0NDUzMg==.html?spm=a2h3j.8428770.3416059.1
无音乐底板焊接视频链接：https://v.youku.com/v_show/id_XNDQ1NjQ1MjM1Mg==.html?spm=a2h3j.8428770.3416059.1
叶片和底板电池盒的焊接视频链接：https://v.youku.com/v_show/id_XNDQ1NjQ1MTM5Mg==.html?spm=a2h3j.8428770.3416059.1
外壳组装视频链接：https://v.youku.com/v_show/id_XNDQ1NjU0NDIzNg==.html?spm=a2h3j.8428770.3416059.1
带音乐底板焊接视频链接：https://v.youku.com/v_show/id_XNDQ1NjU0NDAyNA==.html?spm=a2h3j.8428770.3416059.1
