中国国家标准名称9 ... 钢中非金属夹杂物显微评定方法 Steel - Determination of content of non-metallic inclusion - Micrographic method using standard diagrams 金属材料超低膨账系数测定方法 光干涉法 Metallic material - Standard test method for the extra-low expansion coefficient - Light interferometer method 硬质合金量规毛坯 Blank for hard metal (carbide) gauge blocks ...
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