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核形石
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核形石
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核形石
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核形石
由分泌黏液的藻类生长并捕获和黏结碎屑物质和碳酸钙质点,围绕核心加积而形成的颗粒。又称藻灰结核。
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descending chain condition
descending chain condition for left ideals
descending colon
descending development method
descending difference
descending factorial
descending ideal series
descending induction
descending inhibition
descending node
descending normal series
descending order
descending order of powers
descending pathways
descending perineum syndrome
descending plane partition
descending powers
descending power series
descending sequence
descending series
descensional ventilation
descent
descent algorithm
descent datum
descent direction
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