1. Eucommia ulmoides gum (guttapercha or balata) is a crystalline particle existing in the bark and leaf of Duzhong tree (Eucommia ulmoides Oliv), and to extract E.
在杜仲树中杜仲胶以晶体微粒的形式存在，必需用溶剂提取或机械破坏植物组织来获取。
2. Balata A hard, resilient sap-like substance from the South American Balata tree that is used to make a cover for rubber-cored golf balls.
B- 后九洞：18洞球场中的最后9个洞。-倒旋：在推杆面上，突然停止击打，使球倒转。-后挥杆：向后摆动部分，从地面开始，经过头部向后。