scumming

英 [ˈskʌmɪŋ]

美 [ˈskʌmɪŋ]

v. 形成浮垢（或浮渣）; 覆盖着浮渣
scum的现在分词

According to quality problems of wall, it analyzes causes of cracks 、 scumming and abscission in mass cement sand pulp wall plastering, and puts forward prevention measures to ensure beautiful view of wall.
针对工程墙面存在质量病害的现象，分析了大面积水泥砂浆墙面抹灰出现裂纹、泛霜、脱落的原因，介绍了其防治措施，以保证墙面的美观效果。
It was found that the kind and addition dose of additives had big effects on the strength and scumming of fluor-gypsum products, and proper composite additive had obvious inhibitory effect on the activation and scumming phenomenon of fluor-gypsum.
实验表明，外加剂的种类和掺量对氟石膏的强度和泛霜效果有较大影响，合适的复合外加剂对氟石膏的活性激发和泛霜现象的抑制有明显的效果。
This paper analyzes the essential scumming reasons for magnesite product and every kind of modified measures and results used normally now.
分析了菱镁制品返卤泛霜的根本原因及目前常用的各种改性措施及效果；