Oxygen and strontium isotopes, which are fixed in dental enamel at the time of tooth formation, were tested in 18 subjects.

在18件样本上检测了氧和锶的同位素。这两种元素在牙齿成型时，会固定在牙釉质上。

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Thus, distinguishes between two kinds of battery electrolyte "fixed" way and provide oxygen to the cathode channel differently, thus the performance of the two kinds of battery also.

由此看出，两种电池的区别就在于电解液的“固定”方式和提供氧气到达负极通道的方式有所不同，因而两种电池的性能也也。

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The nitrogen Deoxo Vessel contains a fixed bed of free copper catalyst which removes oxygen from the nitrogen stream by oxidation of copper to copper oxides.

氮气脱氧罐中装有一个游离铜催化剂的固定床，通过将铜氧化成氧化铜把氧气从氮气中脱除。

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