Whether the reaction is exothermic or endothermic.
反应是放热的还是吸热的。
It had one question: Is hell exothermic or endothermic?
只有一个问题：地狱是放热的还是吸热的？
Selectcracking is a highly endothermic reaction process.
柴油非临氢降凝是强吸热反应过程。
Let's see. This is an endothermic, or exothermic, negative sign.
让我们看看这是吸热，还是放热负号。
Let's see. This is an endothermic, or exothermic, negative sign.
让我们看看这是吸热，还是放热负号。
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