free sulfur

基本解释

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。