Now in this particular reaction, I've got hydrogen gas, iron solid. Those already are elements in their most stable forms at room temperature and pressure.

特定的反应中，我有氢气，固态铁，这些都已经是，处于室温和常压下，最稳定的元素单质。

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The paper discusses the principle of PCT testing equipment; the over-all control scheme for the gas-solid reaction controller is decided.

在详细考察国外现有PCT测试装置及其原理的基础上，本文给出了气体-固体反应控制器的整体控制方案。

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In this system, the on-line chromatograph is fixed, so it can be operated simply and rapidly, and is available to be used for studying the kinetics of gas-solid reaction.

该系统实现了在线色谱分析，操作简便迅速，可用于气固反应动力学的研究。

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Now in this particular reaction, I've got hydrogen gas, iron solid. Those already are elements in their most stable forms at room temperature and pressure.

特定的反应中，我有氢气,固态铁，这些都已经是,处于室温和常压下,最稳定的元素单质。

麻省理工公开课 - 热力学与动力学课程节选

The gas is then fed into a stack of solid oxide fuel cells, where a chemical reaction between hydrogen and oxygen occurs, producing electricity, water vapor and a tiny amount of carbon dioxide.

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