JIS R 3257-1999 Testing method of wettability of glass substrate《玻璃衬底材料湿润度的试验方法》.pdf

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JIS Z2345-1-2018 Standard test blocks for ultrasonic testing -- Part 1 A1 Standard Test Block《超声检测用标准试块 第1部分 A1标准试块》.pdf

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