n.二甲基甲烷，丙烷...

methylmethane的音标：methylmethane的英式发音音标为：[meθɪl'meθeɪn]methylmethane的美式发音音标为：[meθɪl'meθeɪn]...

甲基甲烷...

dimethylmethane的音标：dimethylmethane的英式发音音标为：[daɪmeθɪl'meθeɪn]dimethylmethane的美式发音音标为：[daɪmeθɪl'meθeɪn]...