标准摘要
[中文适用范围]： 本文件规定了一种测量系统，可以在实验室条件下确定烟雾排放测试的透射率和光密度。 本文件还提供了系统的校准方法。 本文件是 DIN 50055 的英文版本，经过少量编辑修改。 [外文原描述]： This document specifies a measuring system that enables the determination of the transmittance and the optical density of smoke emission tests under laboratory conditions. This document also provides the calibration method for the system. This document is an English-language version of DIN 50055, with minor editorial modifications.
英文名称Light measuring system for smoke emission testing