网络 孔型图像质量指示仪; 图像质量评价指标体系(image quality indicators); 像质计(image quality indicator)
It was considered that the establishment of radiographic IQI standard for solid rocket motor chamber was necessary.
认识到建立固体火箭发动机燃烧室X射线探伤像质计标准势在必行。
What is the essential wire diameter (of wire type IQI) for the joint in Question 6. 4 ?
在问题6.4中的接头应用的线型像质计在底片上应显示的钢丝直径是多少?