critical temperature
Technical term in physics and engineering for the temperature above which a gas cannot be liquefied by pressure alone, or the temperature at which a material undergoes a phase transition (e.g., superconductivity).
The critical temperature of a superconductor varies depending on the material.
二酸化炭素の臨界温度は約三十一度だ。
The critical temperature of carbon dioxide is about 31 degrees.