GB/T 7991.7-2019搪玻璃层试验方法第7部分:平均线热膨胀系数的测定国家标准
英文:Test method of viterous and porcelain enamels—Part 7:Determination of coefficient of mean lincar thermal expansion GB...
英文:Test method of viterous and porcelain enamels—Part 7:Determination of coefficient of mean lincar thermal expansion GB...