查询词典 soil cement

By analyzing soil quality of 4 kinds of land use types in Kalamay agriculture development area according to principal component analysis, we draw the conclusions: nature shrub tree land is affected little by mankind, a great deal of organic matter return to soil every year, and root system can improve soil physical quality, can absorb salt from soil, so the soil quality of nature shrub tree land is the best; the soil quality of farmland is better than the soil quality of manpower Tamarix Bulrush land, which may be reasoned that man make for soil quality by irrigation to exclude salt and fertilizing organic muck in the earlier oasis digging up period. Soil physical qualities of tree land get harden and worsen for flooding irrigation, furthermore climate in Kalamay is dry and rainless , the other irrigation is very long time after the former one, so soil get harden severity and result soil physical quality get worse and worse.

利用主成分分析法分析新疆克拉玛依农业开发区四种土地利用方式下的土壤质量，得出：天然灌木林地，受人为影响较小，每年有大量有机物质返还土壤，且天然灌木的根系可以很好的改良土壤的物理性质，同时所选天然灌木林灌木多是耐盐碱并且本身又具有吸收积累来自土壤的盐分，土壤质量最好；农田受到的人为影响最大，但农田综合得分却好于人工柽柳芦苇地综合得分，这可能是由于在开垦初期的绿洲农田，受到了人们灌水压盐及增施各种有机无机肥料等有利于土壤质量提高的措施所致；乔木林地，由于人们用大水漫灌的方式灌溉，致使林地土壤变得板结，土壤物理性质下降，加上克拉玛依地区气候干燥少雨，一次灌溉后较长时间后才有下一次灌溉，致使土壤理化性质恶化，土壤质量不高。

In addition, there are constrained by the rock of the limestone soil and purple soil, and thick bone soil, paddy soil, brown soil, aquic soil, peat, marsh land, Carboniferous soil, rocky soil, mountain meadow soil, red clay, the new soil, such as soil type.

此外，还有受母岩制约的石灰土和紫色土、粗骨土、水稻土、棕壤、潮土、泥炭土、沼泽土、石炭土、石质土、山地草甸土、红粘土、新积土等土类。

By field and indoor test, the paper measures soil physical property, soilmoisture constant and soil water movement parameter, provides the soil specificgravity , the soil apparent density, the soil fraction, the soil field moisturecapacity, the soil saturated moisture capacity, the soil percent moisture content ofcom germination and seedlings emergence, the corn wilting point, and alsoestablishes the equation of soil water retention curves, the equation of soil waterdispersion coefficient and the relationship between pressure and soil apparentdensity, and so those provides the parameter for numerical simulation.

通过田间和室内试验，测定了供试土壤的物理性质、土壤水分常数和土壤水分运动参数，得到了该土样的比重、容重、机械组成、田间持水率、饱和含水率、玉米种子发芽出苗土壤含水率、玉米凋萎系数，给出了土壤水分特征曲线方程、土壤水分扩散系数方程及土壤容重与土壤压紧力的关系，提供了数值模拟过程中所需的参数。

Statistic analysis showed that soil temperature as the driving factor to the diurnal variation of soil respiration. Soil temperature and soil moisture were the dominant environmental factors affecting the seasonal variation of soil respiration and explained 87% of its variability. LAI and root biomass were positively related to soil respiration rate, indicating that biotic factors also affected the seasonal variation of soil respiration. However, soil properties such as soil organic content, total nitrogen content, and C/N ratio had poor correlations with soil respiration. Top-dressing nitrogen fertilizer increased soil respiration significantly.

统计分析表明：土壤温度是玉米生态系统土壤呼吸日变化的驱动因素；土壤温度和土壤水分是影响土壤呼吸季节变化的关键因素，二者可以解释玉米生长季土壤呼吸时间变异的87%；LAI和根系生物量与土壤呼吸速率呈正相关，说明生物因子对土壤呼吸季节变化也有影响；土壤有机质、全氮和碳氮比等土壤理化特性与土壤呼吸速率的关系较弱；玉米生长季追施氮肥明显促进土壤呼吸速率。

On the structural properties of soil-cement mixtures and to expect to obtain important conclusions for soil-cement application not only to the attached construction of on-going project of but to other future soil-cement application where soil-cement, as an alternative to rock riprap for slope protection, is not locally available.

期能获得相关研究成果，以提供执行中之湖山水库计画，在其附属工程方面之应用，或者作为日后其他水库工程计画案，在大坝坡面保护工之抛石材料不易取得时，当作替代方案之规划设计参考。

The soil erodibilities are compared and appraised for the majority of the soil types in Ningxia. The method published by D. W. Fryrear et al is adopted to calculate erodible fractions for the soils in Ningxia. The erodibilities of main soil types are compared and analyzed. Spatial distribution of soil erodibilities in the region can be perceived on the Map of Ningxia Soil Erodibility. The map is based on the digitized map of soil types of the all region by means of the geographical information system of Region Manager. Evaluation results show that erodible soils occupy a large portion of the total area of the region.(3) The third task is evaluation of effects of human activities for farming on soil erodibility. Tillage and cultivation can alter soil properties. The paper, based on the discussion on the characteristics of farmland suffering wind erosion in the region, analyzes the contents and intensities of farming disturbing surface soil. Emphasis is paid on the effect of farming on erodibilities of each type of soil.

W Fryrear等人的计算土壤可蚀部分含量的方程，此方程的自变量包括土壤有机质、碳酸钙、沙粒含量、沙粘比，计算了宁夏主要土壤类型表层的可蚀含量，进而比较它们的可蚀性，并以宁夏土壤分布图为底图用地理信息系统建立了宁夏土壤风蚀数据库，完成了宁夏土壤可蚀性图，评价结果显示宁夏地区主要的土壤类型较容易遭受风蚀；（3）农业经营对土壤风蚀的影响及其评价，在分析宁夏农业土壤遭受风蚀特征的基础上，首先讨论了农业活动对土壤理化性质的干扰，评价主要耕作栽培措施对土壤风蚀的影响，选取粗糙度、表面结皮、可蚀颗粒含量、留茬和有效时间为指标，用打分方法作了评价。

Qilian Mountains are mainly located in the mountains for a cold desert soil → ash swamp land and soil; Long in the first mountain chestnut soil as a soil-gray →→ gray-brown desert soil; in the northern Gobi desert soil as a gray-brown sand of a wind →→ saline soil; corridor oasis for irrigated desert soil → a gray-brown desert soil of a meadow → soil.

在祁连山区主要分布为高山寒漠土一→灰钙土及沼泽土；龙首山区为栗钙土一→灰钙土一→灰棕漠土；北部戈壁为灰棕漠土一→风沙土一→盐土；走廊绿洲为灌漠土一→灰棕漠土一→草甸土。

ABSTRACT Purpose By adding additives in carbonated hydroxyapatite cement to increase its rheology to prepare injectable carbonated hydroxyapatite cement.(1) Test the physicochemistry characteristics of ICHA cement.(2) Evaluate the biocompatibility of ICHA cement.(3) Biomechanieal appreciation of ICHA cement used in distal radius fracture.(4) Study the mechanical stability, degradation and bone formation ability of ICHA cement used in goat lateral tibial plateau compression fracture.

目的 在碳酸化羟基磷灰石(Carbonated hydroxyapatite，CHA)水泥原位固化基础上进行改性研究，通过改变其流变学特性，达到具有良好注射性能的可注射性碳酸化羟基磷灰石(Injectable carbonated hydroxyapatite，ICHA)水泥，为骨科的微创治疗提供新方法：(1)制备ICHA水泥，完成理化性质的检测；(2)进行ICHA水泥的生物相容性评价；(3)探讨ICHA水泥在桡骨远端骨折应用的生物力学固定强度；(4)研究ICHA水泥在实验性大动物胫骨平台压缩性骨折中应用的力学稳定性、降解性能及成骨性能。

Watering concrete curing time, the introduction of Portland cement, ordinary portland cement or slag cement concrete mixing shall not be less than 7d; retardation of mixed type with admixtures, the impermeability requirements, or ash cement, fly ash cement concrete mixing shall be not less than 14d; of mixing using alumina cement concrete not less than 3d.

混凝土的浇水养护时间，对采用硅酸盐水泥、普通硅酸盐水泥或矿渣硅酸盐水泥拌制的混凝土不得少于7d；对掺用缓凝型外加剂、有抗渗性要求、或用火山灰水泥、粉煤灰水泥拌制的混凝土不得少于14d；对采用矾土水泥拌制的混凝土不少于3d。

Cement machines series ----- universal testing machines, presses, reinforced RBI machine, punch cold-formed steel hinge line fixture, cement mortar tap Taiwan, cement mortar mixer, electric bending machines, boiling cooking me , Cement mobile device, On-Screen vacuum cement, cement conservation me, in the dry box, single-lying compulsory mixer, Serratia folder detector, the box's electric furnace, the proportion of mud, viscosity instrument, in terms of specifications Model Test equipment.

水泥仪器系列-----万能材料试验机、压力机、钢筋打点机、冷弯冲头、钢铰线夹具、水泥胶砂振实台、水泥胶砂搅拌机、电动抗折机、沸煮箱、水泥流动仪、水泥负压筛析仪、水泥养护箱、于燥箱、单卧强制搅拌机、雷氏夹测定仪、箱氏电炉、泥浆比重计、粘度仪、含量计、各种规格型号试验仪器。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。