天气预报15天查询> 其他> 灯泡为什么会发光

灯泡为什么会发光

更新时间: 2020-07-13 00:00:00     

白炽灯里面的灯丝是钨丝 ,其主要成分是钨,当钨丝通电时,由于钨丝的电阻式电能转化成内能 将钨丝加热,温度升高,一般金属加热到一定程度后就会发光。

关键词: 灯泡 为什么 发光

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-3466119/ | 耗时:0.8635 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=3466119 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3466119 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3466119 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1085947,1097415,951607,445580,1100931,945784,219927,445858,327930,268906,322323,1304908,1463957,714839,620288,1064527,1072435,261407,124476,1099861,131498,868656,482175,268620,650504,1130118,1089446,208090,233629,425991) ORDER BY field (ArticleID,1085947,1097415,951607,445580,1100931,945784,219927,445858,327930,268906,322323,1304908,1463957,714839,620288,1064527,1072435,261407,124476,1099861,131498,868656,482175,268620,650504,1130118,1089446,208090,233629,425991)