Rosins within wires are well distributed.
线内松香分布平均。
The study of preparation of maleated rosins and their application as paper size was started in China in 1974.
我国对马来松香的研制及其用作造纸施胶剂进行了十多年的研究。
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 .
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 .
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。
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