1) depleting and diluting tendency
贫化趋势
1.
The depleting and diluting tendency of phosphate rock in main mines in China is described.
介绍我国主要磷矿区资源贫化趋势,对原因进行了分析。
2) change trend
变化趋势
1.
Current situation of air environmental quality and change trend analysis in Sanmenxia city;
三门峡市环境空气质量现状及变化趋势分析
2.
The content and change trend of metal Hgin soils -vegetables in Guangzhou;
广州市蔬菜地土壤-蔬菜中重金属Hg的含量及变化趋势
3.
Precipitation characteristic and analysis on the change trend in Tonglu County of Zhejiang Province;
浙江省桐庐县降水特征及变化趋势分析
3) variation trend
变化趋势
1.
Analysis on the content and variation trend of heavy metal in themarine organisms in Daya Bay;
大亚湾海洋生物体重金属含量与变化趋势分析
2.
Study on the Mortality Rate and Variation Trend from 1991 to 2005 of Huantai Residents;
桓台县居民死亡流行水平和变化趋势研究
3.
Based on the data of chemical oxygen demand(COD)in Bohai Bay during 1995—2005t,he variation trend of the COD in different seasons(May,Aug and Oct)and years was analyzed.
基于1995年到2005年渤海湾化学耗氧量(COD)的监测数据序列,研究了渤海湾10年来COD的季节(5月、8月及10月)及年际间的变化趋势,运用极值理论研究了COD的极值分布规律,计算了COD分别超过不同污染水平的风险概率。
4) trend
[英][trend] [美][trɛnd]
变化趋势
1.
An analysis of water environment quality in Jinjiang River System and its trend;
晋江水系水环境质量及变化趋势分析
2.
The Trend of Environmental Quality of Jiangsu in Ten Years;
江苏省10年环境质量变化趋势分析
3.
The Trend of Metabolic Syndrome from 2000 to 2004—Qingdao Port Health Study;
2000～2004年代谢综合征的患病率及其变化趋势—青岛港健康研究
5) changing trend
变化趋势
1.
To analyze the pollution condition of SO-2 in the atmosphere from the changing trend of the speed of sulfation during recent 5 years of Yinchuan City;
从银川市硫酸盐化速率五年来的变化趋势分析环境空气中二氧化硫的污染状况
2.
Analysis of chemical elements in kernel oil in Sapium sebiferum Roxb,and research into their changing trend;
乌桕梓油化学成分及其变化趋势的研究
3.
An Analysis on Physical Quality Changing Trend of Students in Primary and Middle Schools of Han Nationality in Fujian Province During the Ninth Five-Year Period;
“九五”期间福建省汉族中小学生身体素质变化趋势分析
6) change tendency
变化趋势
1.
The change tendency of foundation base bearing capacity;
基础底面承载能力的变化趋势
2.
Through comprehensive analysis of monitoring results of water quality of Huang River,Da Hei river system and Hui river system over ten years,the change tendency is exposed,and the problems in each river pollution section which are urgent to be resolved are put forward.
对黄河(过境)、大黑河水系及浑河水系十年水质检测结果进行综合分析,揭示其变化趋势,并针对各河流污染断面提出急需解决的问题。
3.
The change tendency and factors affecting atmopheric environmental quality are analysised in this paper in Nanhai district of Foshan city,based on atmosphere environmental monitoring data and the state of social economic development from 1993 to 2005.
文章以佛山市南海区1993-2006年的大气环境监测数据为依据,结合本区社会经济发展状况及环保建设举措,系统地分析了南海区大气环境质量变化趋势及成因,结果表明:南海区大气质量总体呈现逐渐好转趋势,但酸雨仍未得到有效控制,这主要是由本区的社会经济发展和能源消费特征决定。
补充资料：采矿贫化率
采矿贫化率
dilution ratio
co ikuang PinhualO采矿贫化率(山lution ratio)矿山生产中采出的矿石品位比原矿品位下降程度。又称矿石贫化率。矿山采矿过程中，由于废石、研石混人高品位矿石，导致采出的矿石品位低于开采前工业储量中矿石地质品位，使采出矿石贫化。其计算公式为: (原矿地质品位一采出矿石品位)/原矿地质品位(%)。采矿贫化率是考核矿山企业开采技术与管理水平的主要技术经济指标之一。从贫化率大小，可以反映采出矿石的质量情况，如果贫化率偏高，使矿石运输、提升和加工费用增加，并会直接导致精矿质量和选矿回收率下降，影响矿山企业的经济效益。在《矿产资源法》中规定，贫化率指标不得超过设计要求。(郑仁城)
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