本文件确定了航空航天流体系统中常用的温度类型和压力等级。温度类型和压力等级与MA2001（ISO 6771）中定义的国际单位制等效，但不完全相同。要进行精确转换，请使用NAS 10000。

This document establishes the temperature types and pressure classes that are commonly used in aerospace fluid systems.The temperature types and pressure classes are equivalent, but not identical, to the SI units defined in MA2001 (ISO 6771). For exact conversion use NAS 10000.