标准名称：AS 1141.30.2-2009 Methods for sampling and testing aggregates - Method 30.2 Preparation of aggregate reference specimens for visual comparison
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更新日期：2011年10月26日
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AS 1141.30.2-2009 Methods for sampling and testing aggregates - Method 30.2
Preparation of aggregate reference specimens for visual comparison
Preparation of aggregate reference specimens for visual comparison
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