1) salinity losses
盐分流失
2) nitrate run-offs
流失硝酸盐
3) Nutrient loss
养分流失
1.
Influence of different drainage conditions on soil erosion and nutrient loss of slope land;
不同透水状况对坡地土壤侵蚀和养分流失的影响
2.
Research on the nutrient loss from purple soil under differentrainfall intensities and slopes;
不同雨强和坡度条件下紫色土养分流失规律研究
3.
A study on the effect of the Vetiver zizanioides contour hedgerow on the soil and nutrient loss control;
香根草植物篱控制坡地侵蚀与养分流失研究
4) nutrient losses
养分流失
1.
Based on the observation in runoff plots in the western hills of Sichuan Province in 2003, the feature of runoff, sediment yield and the nutrient losses in different patterns of forest (bamboo)-grass compound management were analyzed.
通过坡面人工径流小区的定位观测,对川西低山区2003年几种林(竹)-草复合经营模式与农耕地的产流产沙特征及养分流失情况分析与比较,结果表明:①植被类型及土地经营利用方式的不同对径流特征及产沙量有很大的影响,苦竹+牛鞭草模式在3年后所表现的生态效益优于其他模式;②由于川西低山区强降雨主要集中在7、8月份,此两月各模式与农耕地的产流产沙量均达各自全年总量的70%以上。
2.
More importantly, features of surface runoff and sediment yield, nutrient losses and factors which influenced these features were discussed.
通过坡面人工径流小区的定位观测,在分析与比较川西低山区2003～2004年几种林(竹)+草复合经营模式与农耕地的植被生长状况、经营措施、土壤物理性质及林分持水性能的基础上,重点探讨了各基本模式与农耕地的产流产沙特征和养分流失情况及其影响因素,结果表明: 1 退耕种植的林+草、竹+草有别于其它生态林植被模式,也不同于农耕地的高强度干扰。
5) nutrients loss
养分流失
1.
Through field survey and experiments, the mechanism and space─ time variation of soil nutrients losses are analyed.
本文通过大量的调查和实验，对土壤养分流失的机理和时空变化规律进行了分析，结果表明：泥沙流失是土壤养分流失的主要因素，随坡度增大土壤养分逐渐降低。
2.
In order to study the law of soil nutrients loss in red-soil slop land,the field experiments under three ecological measures and three typical rainfalls were performed to investigate the N and P transfer process in Soil Conservation Ecological Science&Technology Demonstration Park in Jiangxi Province from 2006 to 2007.
为了研究红壤坡地养分流失规律,通过江西省水土保持生态科技园2006～2007年野外试验,分析了3种生态措施、3种典型降雨红壤坡地N、P流失过程。
3.
In this study, field experiments were conducted to investigate runoff and sediment producing processes and different forms of nutrients loss in the shrub plots with 30% or 80% covered by the native shrub Caragana korshinskii and bare soil plot (control) at a slope of 15°under simulated rainfall intensity of 60 mm/h, 100 mm/h, and 140 mm/h.
本文以黄土高原柠条和狼牙刺两个乡土灌木群落为研究对象,通过野外模拟降雨实验,重点研究了降雨强度、历时和群落盖度对坡面产流产沙及养分流失的影响;并对两种灌木群落下坡面产流产沙过程、土壤养分流失过程以及侵蚀泥沙的颗粒机械组成进行了对比研究。
6) churn analysis
流失分析
1.
Research on churn analysis of ETC system customer based on BP neural network;
基于BP神经网络的ETC系统客户的流失分析研究
2.
This paper proposes a framework for decision tree construction algorithms that supports both model exchange and mobile communication churn analysis.
该文提出了支持挖掘模型交换和移动通信客户流失分析的决策树算法框架。
补充资料：醋酸盐分离过程
分子式：
CAS号：
性质：一种从乏燃料溶解液中分离纯化铀、钚的沉淀法流程。其原理是醋酸钠和硝酸铀酰反应生成醋酸铀酰钠沉淀。钚(Ⅵ)与它共沉淀，钚(Ⅲ)，钚(Ⅳ)和大部分裂变产物不沉淀。因此和氧化性介质中共沉淀铀钚和裂变产物分离，在还原性介质中沉淀铀，和钚分离。在氧化、还原介质中重复多次沉淀，使铀、钚和裂片得以分离和纯化。醋酸盐分离流程常和氟化镧共沉淀法结合使用。
CAS号：
性质：一种从乏燃料溶解液中分离纯化铀、钚的沉淀法流程。其原理是醋酸钠和硝酸铀酰反应生成醋酸铀酰钠沉淀。钚(Ⅵ)与它共沉淀，钚(Ⅲ)，钚(Ⅳ)和大部分裂变产物不沉淀。因此和氧化性介质中共沉淀铀钚和裂变产物分离，在还原性介质中沉淀铀，和钚分离。在氧化、还原介质中重复多次沉淀，使铀、钚和裂片得以分离和纯化。醋酸盐分离流程常和氟化镧共沉淀法结合使用。
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