天气预报15天查询> 其他> 土的天然密度和干密度谁大

土的天然密度和干密度谁大

更新时间: 2020-07-03 00:00:00     

1、土的天然密度大;

2、土的天然密度:土的总质量与体积之比称为土的天然密度;

3、土的干密度:干土质量与体积之比称为土的干密度;4、土的总质量大于干土质量,故土的天然密度大。

关键词: 天然 密度

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-1276573/ | 耗时:0.8027 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=1276573 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1276573 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1276573 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1108077,1064061,1085888,1063483,997282,1071131,1128521,1116813,1078424,1049030,1061620,1131315,1098389,1064247,1085882,1097635,1082363,1101917,1092387,1107028,1064861,1066888,1053074,1068708,1090537,1065049,1093230,1086348,1045841,1062566) ORDER BY field (ArticleID,1108077,1064061,1085888,1063483,997282,1071131,1128521,1116813,1078424,1049030,1061620,1131315,1098389,1064247,1085882,1097635,1082363,1101917,1092387,1107028,1064861,1066888,1053074,1068708,1090537,1065049,1093230,1086348,1045841,1062566)