Epoxide resins - determination of softening point - ring and ball method 环氧树脂软化点测定方法环球法
2.
Standard test method for softening point of bitumen ring - and - ball apparatus 沥青软化点测定法环球法
3.
Determination of the softening point of hot - melt adhesives - ball and ring method 热熔胶粘剂软化点的测定环球法
4.
Carbonaceous materials for the production of aluminium . pitch for electrodes . determination of softening point by the ring - ball method 铝生产用碳质材料.电极用沥青.用环球法测定软化点