资料来源 : pyDict

亚硫

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Thionyl \Thi"on*yl\, n. [Thionic + -yl.] (Chem.)
   The hypothetical radical {SO}, regarded as an essential
   constituent of certain sulphurous compounds; as, thionyl
   chloride.