The opaque oil film reduces the quality of light and affects the sea-air exchange so that the sea reduce the oxygen yield which cause marine lives death of suffocation.
不透明的油膜降低了光的通透性，影响海区的海空物质交换，从而使海洋产氧量减少，海洋生物多被窒息而死。
Inadequate B12, found only in animal products, or folic acid can yield blood cells unable to carry vital oxygen to the brain.
只存在于动物性食物中的维生素B12缺乏，或叶酸缺乏时，机体合成的红细胞功能异常，无法为脑细胞供应至关重要的氧。
In this article the laser fluorescence spectra and the singlet oxygen relative quantum yield of hematoporphyrin and its derivatives are deter - mined.
本文测定了血卟啉及其衍生物的荧光光谱及单态氧的相对量子产额。
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