天气预报15天查询> 其他> 为什么用酒精灯外焰加热

为什么用酒精灯外焰加热

更新时间: 2020-10-09 00:00:00     

火焰内部缺氧并处于高温,燃料只是处于气态,并未剧烈燃烧,而氧气由于气态燃料的燃烧在外焰已经耗尽。所以燃料在外焰剧烈燃烧放热,故外焰温度高。而加热是吸收燃料燃烧的热量,温度的稳定性并不重要。另外,加热时太靠近焰心容易损坏仪器。

关键词: 为什么 酒精 外焰 加热

如有意见、反馈、侵权或投诉等情况,请联系:

电话:
邮箱:

我们将会在48小时内给与处理!

版权所有 Copyright ? 2009-2020 tianqiyubao3.com

页面:/news/view-3214606/ | 耗时:1.0038 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=3214606 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3214606 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3214606 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(757754,194964,1128447,1725092,1129431,3158402,1557790,1573544,1080835,3083024,2565421,1132691,884820,1108444,2758421,1047715,2394568,1065583,2076832,1100360,1848844,2091540,1572492,1126414,1275665,2936131,3115557,986890,2922274,2132350) ORDER BY field (ArticleID,757754,194964,1128447,1725092,1129431,3158402,1557790,1573544,1080835,3083024,2565421,1132691,884820,1108444,2758421,1047715,2394568,1065583,2076832,1100360,1848844,2091540,1572492,1126414,1275665,2936131,3115557,986890,2922274,2132350)