鹅卵石主要化学成分是二氧化硅，其次是少量的氧化铁和微量的锰、铜、铝、镁等元素及化合物。
The main chemical components of the pebbles are silica, followed by a small amount of iron oxide and manganese, copper, aluminum, magnesium and other elements and compounds.
确定的断裂表面的EDAX（介金属化合物）之间的铜和金，铜和铝之间的金属间化合物。
The intermetallic compounds (IMCs) between copper and gold and between copper and aluminum are identified on the fractured surfaces by EDAX.
确定的断裂表面的EDAX（介金属化合物）之间的铜和金，铜和铝之间的金属间化合物。
The intermetallic compounds (IMCs) between copper and gold and between copper and aluminum are identified on the fractured surfaces by EDAX.
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