会溶温度恒定情况

[建] constancy of temperature

huì róng wēn dù héng dìng qíng kuàng ㄏㄨㄟˋ ㄖㄨㄥˊ ㄨㄣ ㄉㄨˋ ㄏㄥˊ ㄉㄧㄥˋ ㄑㄧㄥˊ ㄎㄨㄤˋ