Standard guide for petrographic examination of aggregates for concrete.
混凝土用集料的岩相检验标准指南
Petrographic characteristics of authigenic carbonates from Jiulong methane reef of northern South China Sea
南海北部陆坡九龙甲烷礁冷泉碳酸盐岩沉积岩石学特征
The chemical composition, petrographic analysis and dispersing property of kinds of bauxitic clay are compared.
对比研究了几种铝矾土的化学组成、相组成和分散性能。
DISSOCIATION CHARACTER AND SEPARATION TECHNIQUE OF COAL PETROGRAPHICAL CONSTITUENT
煤岩组分的解离特性与分离技术
macroscopic petrographic constituent of coal.
煤的岩石组成
In petrographic terms, this stone is defined as volcanic tufa.
地质学上，此石材属于火山凝灰岩。
PETROGRAPHIC DESCRIPTION AND OXIDATION RESEARCH OF IMPOUNDED COAL FINES IN SOUTHERN INDIANA, USA
美国印地安那南部积贮煤泥的岩石学描述与氧化作用研究
These findings are significant in understanding of the characteristics of coal petrographic constituents and and enr.
煤岩组分和煤变质程度是影响煤层生储气能力的主控因素。
petrographic examination
石英陶瓷闸板砖
Petrographic characteristics of volcanic lava fron xiong'er group
熊耳群火山熔岩的岩相学特征
petrographic microscope.
岩相显微镱
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