Compared with sulphate pulping process, neutral ammonium sulphite process had the advantages of higher yield and whiteness of unbleached pulp.
与硫酸盐制浆相比，中性亚铵法制浆工艺具有得率高和浆料颜色浅等特点。
The solution effect of sulphite in the process of developer fog formation was Investigated by electron microscopy.
本文用电子显微镜方法研究了亚硫酸钠溶解作用对显影灰雾形成过程的影响。
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