They are called the two fluid batteries, because in place of a single acidulated bath in which the dissimilar metals were before placed, two different liquid solutions were employed. 威廉·亨利·杜利特.世紀發明.
This consisted of alternate discs of copper and zinc, separated by layers of cloth steeped in an acidulated solution. Edward W. Byrn.十九世紀發明進展.
Water, acidulated with 1/100th part of sulphuric acid, is heated to boiling, and a hot mixture of starch and water is allowed to flow into it gradually. Edward W. Byrn.十九世紀發明進展.
His apparatus consisted of a small glass trough, filled with acidulated water, through the bottom part of which were introduced several gold wires corresponding to the letters of the alphabet. 弗雷德里克·科利爾·貝克維爾.偉大的事實.