【摘 要】
:
豫陕晋接壤区位于黄河中游,西近西安,东抵洛阳,南靠秦岭,北望吕梁,山环河绕,鸡鸣三省,地理位置十分重要。该地区蕴藏着极为丰富的矿产资源,有金、铜、铁、钼及石英石、石灰
论文部分内容阅读
豫陕晋接壤区位于黄河中游,西近西安,东抵洛阳,南靠秦岭,北望吕梁,山环河绕,鸡鸣三省,地理位置十分重要。该地区蕴藏着极为丰富的矿产资源,有金、铜、铁、钼及石英石、石灰石、石膏等50多种,尤以盛产黄金而闻名,素有“金三角”之美称。接壤区内河流众多,渭河、汾河、南洛河等40多条河流在该地区注入黄河。因此,该地区在三省国民经济发展和黄河的治理开发中都具有十分重要的地位。
The border area between Henan, Shaanxi and Shanxi is located in the middle reaches of the Yellow River, west of Xi’an, Luoyang to the east, Qinling Mountains to the south, Luliang in the north, mountains and rivers around the mountains, crowing three provinces, the geographical position is very important. The area is rich in mineral resources, including gold, copper, iron, molybdenum and quartz, limestone, gypsum and other more than 50 kinds, especially rich in gold and famous, known as the “golden triangle” reputation. There are many rivers in the bordering area. Over 40 rivers such as Weihe River, Fenhe River and Nanluo River are injected into the Yellow River in this area. Therefore, the region plays an important role in the national economic development of the three provinces and in the development and management of the Yellow River.
其他文献
In 21st century,international cooperation becomes increasingly frequent and extensive,which demands international business staff equipped with cross-cultural co
An analytical solution for the three-dimensional scattering and diffraction of plane P-waves by a hemispherical alluvial valley with saturated soil deposits is
请下载后查看,本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
Flow structure and heat transfer characteristics of an axisymmetric circular jet impinging on a hot 1Cr18Ni9Ti medium plate have been simulated numerically usin
题 目 作 者 期 页 流 动 与 传 递 压力脉动法预测硅粉颗粒最小流化速度的实验 梁卫华 王金福 等 1 1 鼓泡塔中气含量分布与液体循环流动模型 郝晓刚 孙彦平 1 7
溢洪道渥奇段底板混凝土滑模施工袁建旺(北京市第二水利工程处)1工程概述为了提高怀柔水库的防洪标准,经水利部和北京市政府批准,在加高主坝增大防洪库容的同时,对原有东溢洪道进行
中国农产品期货交易从 1993年至今 ,经历了一个从快速膨涨到迅速萎缩的过程。是什么原因导致中国农产品期货交易不能如设计者们预期的那样稳步发展呢 ?许多专家学者提出了多
新媒体的发展使得动画传播渠道多元化、接收终端多样化、消费市场细分化,推动了产业链价值的变动,从而对产业链构成环节及相互关系也产生了极大的冲击。为了强化对产业链其他
当今最新潮的买卖方式---网络交易方兴未艾,人类世界最原始的"以物易物"交易方式,也重新在欧美流行。这种各取所需、不掏钱又可以投资的交易法,吸引不少企业加入。 看准这股风潮商机无限,脑筋动得快的商人,索性扮起"掮客"的角色;他们走遍世界各地,找寻囤积无用的货品,进行"撮合",从中获利。 TEC是欧洲最大的"以物易物"媒介公司。不少希望交换货品的企业,都通过TEC,找到了"理想对象"。公司总
Significant compressive stress may be induced in thin plate weldment by anti-welding heating treatment (AWHT) with a temperature difference above 350℃, and an