GB3323-87标准中各透照方式关于K值和L_3的要求

K and L_3 Values Requirement of Various Arrangement in GB3323-87

射线照相检验过程中 ,一次透照长度L3 值 ,是一个非常重要的参数 ,它直接影响着底片的透照质量 ,本文通过透照厚度K值的要求 ,推导出N值和L3 值 ,在实际X光照相检验过程中具有指导意义 ,使之规范化、系列化 ,具有可操作性 。

In the examination length L 3 value is a very important parameter, it influences direct the image quality of the film directly. In the article the author derives N value and L 3 values based on the requirements of the K value. It can be a guidance in the actual X-ray examination, it is very convenient for technology control.