[建] constant boiling binary mixture, constant boiling mixture, constant boiling ternary mixture
héng fèi sān yuán hùn hé wù ㄏㄥˊ ㄈㄟˋ ㄙㄢ ㄩㄢˊ ㄏㄨㄣˋ ㄏㄜˊ ㄨˋ