ebonite

• Shore plastics and ebonite - determination of indentation hardness by means of a durometer shore hardness iso 868 : 2003 ; german version en iso 868 : 2003
  塑料和硬质胶.用硬度计测定针入硬度肖氏
• The modern clarinet is made of wood or ebonite , of cylindrical bore , with a bell - shaped opening at one end and a plastic ebonite mouthpiece at the other
  单簧管的发声原理是靠装在笛头上的一片簧片之震动故称为单簧管。