ASTM F812-2022 Standard Specification for Surface Discontinuities of Nuts, Inch and Metric Series
hortic已获得悬赏 30 米粒
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ASTM F812-12(2022)
Standard Specification for Surface Discontinuities of Nuts, Inch and Metric Series
英制和公制系列螺母表面不连续性标准规范
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