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sima
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sima si.ma AHD: [sº“m…] D.J. [6sa!m*]K.K. [6sa!m*]n.(名词)The lower layer of the earth's outer crust that underlies the sial and is rich in silica, iron, and magnesium.硅镁层:地球外壳的较低层,在硅铅层之下,富含硅、铁和镁语源:1. si(lica) si(lica)2. ma(gnesium) ma(gnesium)
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更新时间:2025/12/24 20:35:58