The waste material is placed in cells with permeable membranes. 廢液置於有滲透膜的槽中。
Hollow fiber membranes with good gas permeability can be obtained after the extraction of the paraffin oil and stretching to a small extension. 將石蠟油提取掉后稍加拉伸即可得到透氣性很好的微孔中空纖維滲透膜。
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