1.1 本规程涵盖运动粘度-温度方程和图表（参见 无花果。1- 3. )，这是一种在有限范围内的任何温度下确定石油或液态烃运动粘度的方便方法，前提是两个温度下的运动粘度已知。 图1 运动粘度温度图I高温范围的传真（温度单位为摄氏度） 图2 运动粘度温度图I中等范围（温度单位为摄氏度）的传真 图3 运动粘度温度图I低范围传真（温度单位为摄氏度） 1.2 这些图表旨在允许石油运动粘度-温度数据绘制为直线。这些图表是根据第节中所示的等式得出的 5. . 与之前在方法中可用的图表相比，此处提供的图表在线性方面有显著改善 D341页 – 这提高了外推到更高温度的可靠性。 1.3 以国际单位制提供的数值应视为标准值。 1.3.1 例外情况- 括号中给出的值仅供参考。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This practice covers kinematic viscosity-temperature equations and charts (see Figs. 1- 3 ), which are a convenient means to ascertain the kinematic viscosity of a petroleum oil or liquid hydrocarbon at any temperature within a limited range, provided that the kinematic viscosities at two temperatures are known. FIG. 1 Facsimile of Kinematic Viscosity-Temperature Chart I High Range (Temperature in degrees Celsius) FIG. 2 Facsimile of Kinematic Viscosity-Temperature Chart I Medium Range (Temperature in degrees Celsius) FIG. 3 Facsimile of Kinematic Viscosity-Temperature Chart I Low Range (Temperature in degrees Celsius) 1.2 The charts are designed to permit petroleum oil kinematic viscosity-temperature data to plot as a straight line. The charts have been derived from the equations shown in Section 5 . The charts here presented provide a significant improvement in linearity over the charts previously available under Method D341 – 03. This increases the reliability of extrapolation to higher temperatures. 1.3 The values provided in SI units are to be regarded as standard. 1.3.1 Exception— The values given in parentheses are provided for information only. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.