天气预报 > 教育 > 伯努利原理
伯努利原理
更新时间: 2021-01-02 20:58:40  

1、伯努利原理:动能+重力势能+压力势能=常数。

2、早在1726年,有一个叫丹尼尔·伯努利(1700-1782)的人就已经注意到:如果水沿着一条有宽有窄的沟(或粗细不均的管子)向前流动,沟的较窄部分就流得快些,但水流对沟壁的压力比较小;反之,在较宽的部分水就流得较慢,压向沟壁的力则会比较大。这一发现,后来被人们称为伯努利原理。

关键词: 原理

伯努利原理相关经验

天气预报

最新推荐

页面:/news/view-1401067/ | 耗时:0.9178 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=1401067 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1401067 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1401067 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(444967,3522533,100645,2891597,1151272,1824354,403459,369785,673903,667891,965075,3525200,3308568,875116,1366498,908038,806021,2225031,3521700,1152728,363575,3467606,1151029,1203609,2409566,2829773,996398,1113904,1056145,1689896) ORDER BY field (ArticleID,444967,3522533,100645,2891597,1151272,1824354,403459,369785,673903,667891,965075,3525200,3308568,875116,1366498,908038,806021,2225031,3521700,1152728,363575,3467606,1151029,1203609,2409566,2829773,996398,1113904,1056145,1689896)