天气预报 > 生活 > 烧开的水一层絮状物
烧开的水一层絮状物
更新时间: 2021-03-21 09:52:51  

1、烧开的水有一层絮状物是水垢。

2、水是有硬度的,而水的硬度主要是由钙、镁离子形成的,并且按其所含可溶性盐类组成可以分为暂时硬度和永久硬度两类,水在加沸时有白色沉淀析出,沉于水底的是水的钙、镁离子受热分解生成碳酸镁,这就是水垢。

关键词: 状物

烧开的水一层絮状物相关经验

天气预报

最新推荐

页面:/news/view-1872605/ | 耗时:0.9574 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=1872605 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1872605 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1872605 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1117468,1096156,1117554,1073453,1088828,1094821,1121420,1119882,1120426,1103113,1092770,1105787,1119013,1116739,1072044,1064799,1073944,1106384,1112364,1121786,1113690,1082966,1070884,1089444,1076718,1110221,1103350,1042568,1087803,1116065) ORDER BY field (ArticleID,1117468,1096156,1117554,1073453,1088828,1094821,1121420,1119882,1120426,1103113,1092770,1105787,1119013,1116739,1072044,1064799,1073944,1106384,1112364,1121786,1113690,1082966,1070884,1089444,1076718,1110221,1103350,1042568,1087803,1116065)