绞弦琴是一种使用一种固定在轴上的，用松香擦过的木轮“绞”弦的机械小提琴，这种琴现在依然是这样演奏。
The hurdy-gurdy was a , mechanical violin using a rosined wooden wheel attached to a crank to "bow" its strings.
是专业小提琴演奏者理想的松香。
手工生产各种型号的高级学生练习琴及专业演奏用小提琴，中提琴，大提琴，低音贝司以及弦乐器松香等。
Our company , a musical instrument manufacturer with self-run right of import and export , mainly produce violins , violas , cellos , double-basses , rosins etc by hand over 20 years .
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