If air pressure than the standard oil bubble rising fast, explain this oil viscosity is low.
如果比标准空压机油中气泡上升速度快，说明这种油的粘度偏低。
2
Introduce the comprising of the viscosity measurement standard, analyze the measurement standard uncertainty and observe the repeatability and stability of the standard.
介绍了粘度计量标准的组成，分析了该计量标准的不确定度，考察了该计量标准的重复性和稳定性。
3
The results of bench evaluation indicate that the most quality targets are in the range of national standard for oil drain except viscosity.