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1·It's an isothermal change.

这是恒温的变化。

2·PROFESSOR BAWENDI: so, for an ideal gas, the isothermal is the easy one because the energy doesn't change.

对理想气体，等温过程最简单，因为能量不变。

3·The result of experiment has shown that the infrared radiation energy of rock changes obviously with pressure change under the condition of isothermal process loading.

在等温过程加载的条件下，实验得出岩石的红外辐射能量随压力变化显著变化的结果。

4·A new formula to calculate reaction heat is put forward. It is suitable not only for isothermal reaction, there is no limitation of phase change.

提出了一个新的化学反应热计算式，该计算式不仅能对非等温反应的反应热进行计算，而且还可克服应用基尔霍夫公式不能有相变化的限制；

5·An experimental research has been taken on heat efficiency, startup behavior, isothermal characteristics of a vacuum phase change heating system using a new kind of compound working medium.

利用新型复合工质对真空相变供热系统进行了热效率、启动特性、等温特性的实验研究。