比较比例方法
direct comparison proportional method
表面粗糙度比较样块
Comparison specimens for surface roughness
表面光洁度比较器
surface finish comparator
成对比较表
pairwise comparison table
磁性硬度比较器
magnetic hardness comparator
等衬度比较
equality-of-contrast ocomparision
对比度比配函数
contrast matching function
各种不锈钢线在不同处理拉力比较表
Tensile Strength of various kinds of Stainless Steel Wire under Different Finish