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biogeochemical cycle
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【机】 生物地球化学循环
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详细解释：
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以下为句子列表：
英文: The understanding of biogeochemical cycle of hydrogen, oxygen, carbon, nitrogen, and sulfur elements in nature ecosystem have increased substantially in the past two decades owing to the improvement of gas isotope ratio mass spectrometer and the wide appl
中文: 摘要近20年由于「气相同位素比值质谱仪」的改良和氢、氧、碳、氮和硫等稳定同位素的广泛研究，稳定同位素的研究技术已实质增加我们对于这些元素在自然生态系中生地化循环的了解。
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英文: To study the biogeochemical cycle of phosphorus, it is very important to accurately determine the concentration of orthophosphates in the surface of oceans, especially oligotrophic open-oceans.
中文: 痕量活性磷分析是探索海洋，特别是寡营养海区生物地球化学过程的关键。
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英文: The Biogeochemical cycle of sulfur in Calamagrostis angustifolia wetland ecosystem in the sanjiang Plain
中文: 三江平原小叶章湿地生态系统硫的生物地球化学循环
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