停止偿付
发表于 2025-3-25 07:24:32
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nullify
发表于 2025-3-25 08:28:18
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Lyme-disease
发表于 2025-3-25 14:42:30
Stable Hydrogen Isotope Ratios in Plants: A Review of Current Theory and Some Potential Applicationsin the roots and conductive tissues of plants, D/H ratios act as conservative water mass tracers. During evaporation of water at the leaves, large positive isotopic fractionations occur. Large negative isotopic fractionations occur in biochemical reactions during the synthesis of organic compounds i
NOCT
发表于 2025-3-25 16:48:21
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使出神
发表于 2025-3-25 20:04:24
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NICHE
发表于 2025-3-26 02:59:20
Natural Carbon Isotope Tracers in Arctic Aquatic Food Websof organisms on specific habitats or ecosystem processes. Although the complexity of lower-latitude ecosystems often confounds the investigator through the dilution of isotopic signals from multiple sources, in several instances the technique has proven extremely valuable in sorting out food web or
CLEAR
发表于 2025-3-26 06:53:08
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Cholesterol
发表于 2025-3-26 11:17:54
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evince
发表于 2025-3-26 13:33:59
Doubly-Labeled Water Studies of Vertebrate Physiological Ecologyve been used are tritium, which is radioactive and is denoted as .H, H-3, or T, and deuterium, which is stable and is denoted as .H, H-2, or D. Oxygen-18 (.O or O-18) is the oxygen isotope of choice. Oxygen-17 could be used but adequate measurement technology for its use in DLW studies on animals ha
一夫一妻制
发表于 2025-3-26 20:32:17
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