... 3. 轮廓中线(mean lines) 评定参数(parameters) 1. 评定轮廓的算术平均偏差Ra（arithmetical mean deviation of the assessed profile） ...
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表面粗糙度的评定参数 parameters
就蒸发式冷风扇制冷能力的评定参数及其量测方法，结合国内外标准，进行了分析和探讨。
Combining with both the domestic and foreign standards, the Cooling Capacity Rating Parameters and Its Measurement Methods for Evaporative Air Coolers Were Analyzed and Discussed.
其中有关评定参数及验收准则曲线的制定颇有参考价值，可供检验人员和规程编制组借鉴。
The determinations of assessment parameters and relevant acceptance criterion curve are rather worthily referential for inspectors and regulation working group.
从而，扩大了只用于测量单参数的表面粗糙度检查仪的使用功能，以满足表面粗糙度国家标准所规定的评定参数的要求。
By this method, the function of the instrument is extended and can satisfy the requirement of the surface roughness national standard. The program flow chart is given.
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