首页>
外国专利>
Low-friction grand piano action with a precise response
Low-friction grand piano action with a precise response
展开▼
机译:低摩擦三角钢琴动作,反应精准
展开▼
页面导航
摘要
著录项
相似文献
摘要
The upper limb (12) of the repeat spring (9) rests against a roller (21). This (21) is fastened to a limb of the repeat arm (5), and is mounted to rotate about its own axis (22).
展开▼