This paper studies the influence of phosphate, calcareous material on set time of water glass-slag cement. 研究了磷酸盐、含钙材料对水玻璃&矿渣水泥的凝结时间的影响。
Variation of growing ability is vital to comprehension of environmental transition. Planktonic foraminifera and calcareous nanofossil are two of the most primary producers, which grow mainly in upper euphotic zones and are main contributors of surface water growing abilities. 生产力的变化对于理解环境变迁有重要的作用,浮游有孔虫和钙质超微生物是海洋中最重要的初级生产者之一,主要生长在上部透光带,是表层海水生产力的主要贡献者。
Study on logging response mechanism shows that, reservoir with high mud and irreducible water saturation, thin layer and interlayer are main causes for forming low-resistivity oil layer, while being tight and containing calcareous and residue oil are main factors of forming high-resistivity water layer. 测井响应机理研究表明:储层高含泥、高束缚水饱和度和薄层、薄互层是形成低电阻率油层的主要原因;而储层致密、含钙、含残余油是形成高电阻率水层的主要因素;
The Calcareous shell assemblage was formed by turbidity flow, while the Mixed shell assemblage represented intense to weaker water dynamic condition. 混合壳组合则代表趋于正常的深海沉积环境,反映了由强渐弱的海底水动力条件。
The Technology fo Dealing with Large area Calcareous Stone Pressure Water by Grouting 大面积灰岩承压水注浆封底堵水技术
Most of the calcareous concretions in the loess strata were formed by pedogenesis, where as the same in the substrata of loess profiles could be commonly formed by the illuviation of ground water and the pedogenesis. 黄土钙质结核的形成以成土作用为主,剖面下部钙质结核可能是由成土和地下水淀积作用综合而形成的。
Calcareous Nannofossil evidence for variations in Quaternary surface water paleoproductivity in the southern South China Sea 南海南部第四纪表层海水古生产力变化的钙质超微化石证据
It is suggested that iron chlorosis of peanut grown on calcareous soil could be prevented by controlling soil water content. 所以控制土壤含水量能有效地防止石灰性土壤上花生缺铁黄化症状的发生。
In calcareous stone area orchard, planting forages may increase soil water content and soil nutrient, stablize soil temperature, improve soil physical properties, so can promote the growth of roots of apple trees. 石灰岩山区果园生草可以提高生长季土壤含水量,稳定周年地温,提高土壤基础养分含量;改善土壤物理性能,从而促进果树根系发育。
Application of flat dilatometer test to mechanical characteristics evaluation of calcareous soil in shallow water 扁铲侧胀试验在浅海钙质土力学特性评价中的应用
Based on the analyses of abundance and assemblages of calcareous nannoplankton of the surface sediments from the South China Sea, the correlation between the abundance and water depth is found. 通过对南海表层沉积中钙质超微化石丰度和属种组合的分析,得出化石丰度与水深的关系。
Based on the field observation and the indoor experiment, the article discusses relationship between terrestrial calcareous deposit types and the condition of the water energy, and discusses quantitatively and qualitatively the water energy boundary among every kinds of calcareous deposit. 以野外观察及室内试验分析为基础,讨论了陆相碳酸钙沉积类型与水能量条件的相关关系,并定量和定性地讨论了各类型之间的水能量界线;
Gas migration into reservoirs changes fluid in properties and diagenetic environment, formates a large number of siliceous and calcareous cements, leades to the formation of low porosity and low permeability reservoirs, formates diagenetic dense gas-water distribution area. 天然气充注改变了孔隙流体的性质和成岩环境,形成了大量硅质和钙质胶结,致使储层成为低孔低渗储层,形成成岩致密型气水分布区。