Derivation from a source; origin. 起源从某一源头起始；源头 The leftmost print position on an output line is always 1.
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derivation from a source
来源的派生
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Sulfur isotopic analyses are consistent with derivation of sulfur from a mixed source in deep crust, and lead isotopic analyses support derivation of lead from multiple sources.
硫同位素分析结果表明硫来自地壳深部混合硫源，而铅同位素分析结果反映其来源存在多源性。
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