Glass - viscosity and viscometric fixed points - part 5 : determination of working point by sinking bar viscometer iso 7884 - 5 : 1987 玻璃.粘度和粘度固定點.第5部分:沉棒粘度計測定工作
Viscosity and viscometric fixed points of glass - method for the determination of working point by sinking bar viscometer 玻璃粘度和測定粘度固定點.第5部分:采用無芯棒粘度計測定工作點的方法