2) 2 Cygni, Deneb
天津四(天)
3) Tianquan Sichuan province
四川天全
1.
Based on the the background of the landscape ecological environment,in this article,through investigating the present situation of landscape ecology after small hydropower stave development and analyzing the present situation of water and sound environment,the landscape element influence of the small hydropower stave development of Baisha river in Tianquan Sichuan province were explored.
以水电开发前景观生态环境本底作参照,通过水电梯级开发后的景观生态现状调查以及水、声环境现状分析,探索了四川天全白沙河流域小水电梯级开发的景观要素影响,研究表明:水电梯级开发后景观要素类型发生较大的改变,逐渐向着高度人工化方向发展。
4) four-line antenna
四线天线
5) four lines in The Riddles
《天问》四句
6) Lords of the Four Directions
四天帝王
补充资料：四天
1.四方的天空。 2.即四禅天。 3.道教以东方九气青天﹑南方三气丹天﹑西方七气素天﹑北方五气玄天为四天。参阅《云笈七签》卷二一。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条