So, how would we describe a chemical reaction?
我们如何描述一个化学反应？
When a battery is connected to a load, a chemical reaction begins.
当把电池接到一个负载上，化学反应就开始了。
Hess 'Law states that for any chemical reaction, the energy change is path independent.
盖斯定律表明，对于任意化学反应，能量变化并非是路径依赖的。
Where did that come from? Well, it was the chemical reaction of the explosion.
那它们来自何处，这是爆炸的化学反应。
When we burn something, there is a chemical reaction which produces heat, in many cases.
当我们烧东西时，会产生化学反应，很多情况下产生热。
它不是化学反应。
It is different from a battery, which produces electricity from a chemical reaction.
这与化学电池是不一样的。
What is it when you run a chemical reaction under ordinary circumstances, what's constant?
如果你在通常的环境下进行化学实验，那么这些条件是什么？什么保持常数？
A chemical formed by the reaction of an acid and an alcohol.
一种由酸和醇反应而形成的化学结构。
A reactor is a container for chemical reaction.
反应器是进行化学反应的容器。
Reading a book is like undergoing a chemical reaction.
看一本书就像经历一次化学反应。
This initial reaction or oxidation resists further chemical reaction on the metal surface.
初始的反应或氧化可以抵制材料表面再进行化学反应。
Stop chemical reaction caused replacement.
停机化学置换反应造成。
是一种化学反应。
The heat brings about a chemical reaction, and oxygen is liberated.
热量引起化学反应，释放出氧气。
His theory embrace the whole phenomenon of chemical reaction.
他的理论包含化学反应的整体现象。
They may react with chemical species within the flame to stop the combustion reaction.
阻燃剂可以与火焰中的化学物质起反应，使燃烧反应终止。
They think I caught fire because a chemical reaction caused spontaneous combustion.
他们认为著火是由于化学变化而引起的自发性燃烧。
Personally, I believe it's a chemical reaction that takes place in your brain.
我个人认为，这是一个化学反应，是发生在你的大脑里边。
火是一种化学反应。
The reaction mechanism of chemical bath is been studied.
对常规化学浴的反应机理进行了分析。
The problem is whether the chemical reaction is reversible.
问题就在于该化学反应是否可逆。
Nuclear reaction is a chemical change or a physical one?
核反应是化学反应还是物理反应。
It has great potential application in green chemical reaction.
它在绿色化学反应方面具有很大的潜在优势。
The third, the computation of the chemical reaction.
第三，化学反应的计算。
A photoacoustic model for the solid phase chemical reaction was proposed.
建立了含固相化学反应的光声模型。
A photoacoustic model for the solid phase chemical reaction was proposed.
建立了含固相化学反应的光声模型。
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