大家都搜:
水头高程
1、elevation church───立面教堂
2、elevation plan───立面图
3、elevation view───[机]正视图,垂直投影;[建]立视图
4、elevation vibubbly───仰角气泡
5、elevation───n.高地;海拔;提高;崇高;正面图
6、head water───上游;水压;水头;落差;定压水
7、elevation step───升降台阶
8、elevation burger───立面汉堡
9、elevation map───高度图
1、pressurized irrigation (NPI) method, a newly irrigation technology, in which the elevation of the emitters is higher than that of the water source, runs under negative hydraulic head.───负压灌溉法是一种新近提出的节水灌溉技术,灌溉时供水水头为“负值”,即灌溉水源高程低于灌水器高程。