sulphurous acid

基本解释

The use of sulphurous acid in the manufacture of apple juice is prohibited.
硫磺酸，是不是目前在使用，硫磺酸在制造蘋果汁的中是禁止的。
The result shows that after the plants were sprayed with phosphate buffer, they had an obvious protective function to the harm caused by sulphurous acid.
結果表明，植物經磷酸緩沖液処理後，對亞硫酸傷害具有明顯的防護作用。
The chromatropic acid and magenta sulphurous acid methods for the formaldehyde determined by spectrophotometry are studied in this paper, and the two methods are compared.
本文研究了分光光度法測定甲醛中的變色酸法和品紅亞硫酸法，同時對這兩種方法進行了比較。

an unstable acid produced when sulphur dioxide dissolves in water: used as a preservative for food and a bleaching agent. Formula: H2SO3 (Systematic name sulphuric(IV) acid)