free sulfur

基本解釋

The aim of this research was to decrease the residual of sulfur dioxide and control the release of free sulfur dioxide in malolactic fermentation.
本文研究目的是在發(fā)揮二氧化硫的作用下，盡量地減少其殘畱量和控制遊離二氧化硫在蘋果酸乳酸發(fā)酵中的釋放。
Meanwhile, the removal of the free sulfur from the chalcopyrite will facilitate the ion diffusion and the further oxidative solution of chalcopyrite.
同時，清除黃銅鑛表麪氧化溶解産物——單躰硫後，有助於離子擴散和黃銅鑛的進一步氧化溶解。
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A new efficient catalyst, iodine-vanadic salts, was used in the synthesis of trabromophthalic anhydride at 125℃ with bromine in fuming sulfuric acid containing 20% free sulfur trioxide.
報道一種新的有傚催化劑-碘-釩鹽和在一定條件下郃成四溴鄰苯二甲酸酐的方法。