It was found that the permeation flux of sulfur dioxide can be greatly enhanced by the use of optimum kind of membrane solution and liquid concentration.

采用适宜的膜液及膜液浓度可使二氧化硫的渗透通量得到极大的提高。

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Aqueous solution of the highest concentration of up to 55%, usually 40%, called the formaldehyde water, commonly known as Faure Marin (formalin), is to stimulate the smell of colorless liquid.

水溶液的浓度最高可达55%，通常是40%，称做甲醛水，俗称福尔·马林(formalin)，是有刺激气味的无色液体。

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Aqueous solution of the highest concentration of up to 55%, usually 40%, called the formaldehyde water, commonly known as Faure Marin (formalin), is to stimulate the smell of colorless liquid.

水溶液的浓度最高可达55%，通常是40%，称做甲醛水，俗称福尔·马林(formalin)，是有刺激气味的无色液体。

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