資料來源 : pyDict

甲烷計; 沼氣檢定器

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Methanometer \Meth`a*nom"e*ter\, n. [Methane + -meter.]
   An instrument, resembling a eudiometer, to detect the
   presence and amount of methane, as in coal mines.