工学 >>> 农业工程 >>> 农业机械学 农业机械化 农业电气化与自动化 农田水利 水土保持学 农田测量 农业环保工程 农业区划 农业系统工程 农业工程其他学科
搜索结果: 1-6 共查到农业工程 Cr相关记录6条 . 查询时间(0.063 秒)
The article deals with the comparison and evaluation of the development of economic indicators, such as the costs, yields, economic result and profitability in the Czech and Slovak Republics for the p...
分别用堆肥、零价铁、堆肥-零价铁作为反应介质,对PRB处理铬污染地下水的可行性和有效性进行了研究。结果表明:以堆肥-零价铁作为反应介质的反应柱去除Cr(Ⅵ)的效果比单独以堆肥或铁粉为介质的反应柱好;增加铁粉或堆肥的用量均有利于Cr(Ⅵ)的去除;堆肥时间对Cr(Ⅵ)的去除效果影响不大;出水总铁含量符合《生活饮用水卫生标准》要求。
The fact that the development of information and communication technologies (ICT) is a key factor of development of individuals, regions, sectors and whole countries is well known at the beginning of ...
The article deals with the comparison and evaluation of the development of economic indicators, such as the costs, yields, economic result and profitability in the Czech and Slovak Republics for the p...
The paper is based on a special sampling survey of farms that was conducted under EU PHARE ACE research project P97-8158-R “Micro-economic Analysis of Farm Restructuring in Central and Eastern Europe”...
A basic presumption of sustainable economic development of every branch is an efficient use of production factors. As a decisive production factor, it is possible to consider labour which actives othe...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...