Which indubitably indicate that the bismuthous sulfide can only dissolve in halogen acid except hydrofluoric acid, the mixed solution of dilute sulfuric acid and alkali halide.

结果表明硫溶于氢卤酸（除氢氟酸外）、稀硫酸与碱金卤物的混合液中，不溶于稀硫酸中。

It is studied further that the dissolubility of the bismuthous sulfide in the solutions of the non-oxidative strong acid through the experiment by means of chemical thermodynamics.

学热力学基础理论和方法研究了硫在无氧性强酸和可溶性碱金卤物溶液中的溶解性。