1.1本规程描述了当从具有精度限制的其他两种方法计算值时，计算精度限制的技术。 1.2本标准可能涉及危险材料、操作和设备。本标准并非旨在解决与其使用相关的所有安全问题。使用本标准的人有责任在使用前咨询并建立适当的安全和健康实践，并确定监管限制的适用性。

1.1 This practice describes techniques for calculating precision limits when values are calculated from two other methods having precision limits. 1.2 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.