lime scum英 [laɪm skʌm]美 [laɪm skʌm]网络 压滤残渣机械双语例句The major problems of manufacturing high lime flyash-glass are scum, ferro-beads and seeds etc.熔制高钙粉煤灰玻璃的主要问题是熔化过程中容易形成浮渣、铁珠、灰泡。