天气预报 > 体育 > 石灰与石膏
石灰与石膏
更新时间: 2021-05-23 00:58:51  

1、石膏是单斜晶系矿物,是主要化学成分为硫酸钙(CaSO4)的水合物。石膏是一种用途广泛的工业材料和建筑材料。可用于水泥缓凝剂、石膏建筑制品、模型制作、医用食品添加剂、硫酸生产、纸张填料、油漆填料等。

2、石膏及其制品的微孔结构和加热脱水性,使之具优良的隔音、隔热和防火性能。

关键词: 石灰 石膏

石灰与石膏相关经验

天气预报

最新推荐

页面:/news/view-3385316/ | 耗时:0.7577 s | 内存:2.11 MB | 查询:5 | 缓存读取:3 写入:1 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=3385316 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3385316 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3385316 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(795288,1908352,2609495,976185,535132,2761615,3317797,983151,1156404,865258,3500984,2920597,2299390,1308867,3582114,794768,2800007,3519406,1182702,1920386,3505811,696421,2338904,596784,3098513,1168759,438037,3493378,1976944,3137177) ORDER BY field (ArticleID,795288,1908352,2609495,976185,535132,2761615,3317797,983151,1156404,865258,3500984,2920597,2299390,1308867,3582114,794768,2800007,3519406,1182702,1920386,3505811,696421,2338904,596784,3098513,1168759,438037,3493378,1976944,3137177)
SELECT * FROM tbl_categories where CategoryID=90024 LIMIT 0,1