isotope derivation 中文意思是什麼
isotope derivation
解釋
同位素衍生- isotope : n. 【化、物】同位素。
- derivation : n. 1. 引出，導出。2. 出處，由來，起源。3. 【語言學】詞源；派生。4. 衍生；衍生物。
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It was also indicated by the studies on a large number of pb isotope that pb in ores of the deposit chiefly came from volcanic rocks in the strata and later intrusions with derivation of a little pb from the normal deposit stratum
大量pb同位素研究也表明，礦床的礦石鉛源跨越了下地殼、地幔和造山帶演化線，形成混合鉛帶，多集中於地幔和造山帶演化線附近，暗示pb主要來自地層中的火山巖和後期的侵入巖，少量來自正常沉積地層。
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