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The heat capacity Cp of EDTA solution used as activator in the Buna- S manufac-ture was measured by using a precision automated adiabatic calorimeter in the temperaturerange of 278K to 324K as fundamental data for the construction of large compositive appara-tus.

丁苯橡胶合成用活化剂乙二胺四乙酸盐溶液比热的测定赵小明,刘志刚,陈钟颀(西安交通大学热工教研室西安710049)关键词EDTA溶液,比热,绝热量热法比热是物质重要参数,与物质结构密切相关。

Some improvements are performed on the capacitive coupling probe to increase its frequency range. In this case, it could measure the D. C. volts and RF volts respectively.

针对原有性探针存在的问题,增宽了新研制的性探针的频响范围,改进后的性探针能同时测量直流电位和射频电位。

Firstly, we introduce the technology of seismic geometric attribute for fault identification detailedly at home and abroad. Secondly we study the coherence, texture,curvature attribute and tricolor display technology of RGB to identify fault; In the part of coherence,we compare the traditional algorithms with model and actual data,mainly study the geometric structural tensor and wavelet multi-scale sub-frequency coherent algorithm; In the part of texture attribute, we introduce texture energy, texture contrast, texture entropy and texture homogeneity attribute.By merging texture attributes of different directions,the effect are more clear; In the part of curvature attribute,we study and analyze fractional-order curvature attribute's extraction and its application in fault identification; The RGB display technology mainly introduces how to merge multi-attributes in order to getting more richer and more clearer information.

首先具体先了地震几何属性识别断层技术的国内外研究现状;然后分别研究了相干属性、纹理属性、曲率属性和RGB三原色显示技术来识别断层;其中相干属性通过模型和实际资料对传统相干体算法进行了对比,重点研究了几何结构张量相干体算法和小波多标准分频相干体算法;纹理属性主要先了纹理能量、纹理对比、纹理熵和纹理一致性属性,通过对不同方向的纹理属性进行融合,效果更清楚;曲率属性重点分析了分波数曲率属性提取及其在断层识别中的应用;RGB三原色显示技术则主要先了如何进行多属性融合来或得更丰富、清楚的信息,在此基础上开发了基于。

The pore capacity is becoming smaller with increasingthe vitrinite content. 2. Micro-porosity is dominated in the total pore capacity, which takes more than50%. There is not relationship among pore capacity and specific surface with otherfactors such as Maceral and R0, which shows that the distribution and shapes of poreare not influenced by the composition of the coal. 3. The pore is opened for the coal of Ordos Basin, the order is from durain to clarainthen samples to vitrain. Others are belong to half-opened and thin throat. 4. The adsorption content of gas is increasing with the higher pressure, and the freegas content is decreasing;The adsorption content of gas is decreasing with thehigher temp, and the free gas content is increasing;The adsorption content of gas isincreasing with higher vitrinite content for the kennel coal when temp.

总空隙主要由小孔孔构成,小孔孔占了50%以上;镜质组含量和惰性组含量等物质以及镜煤反射率均与孔、比表面未表现出明显的相关性,说明孔隙分布特征不受物质组成的影响 3、鄂尔多斯地区的空隙呈现开放状态为主,空隙开放的次序为暗煤-亮煤-煤样-镜煤,其他盆地则为半封闭和细瓶颈空隙 4、随压力增加,煤对气体的吸附量增加,煤中所含游离气的量随之减小;随温度增加,煤对气体的吸附量减小,而煤中所含游离气的量随之增加;在相同的温压条件下,同是长焰煤的样品,吸附量在孔中所占的比例随镜质组含量增加而增加。

But as a result of sorts of reasons all the Murong Hsien-Pi regimes couldn't be existed for a long period and after regimes disintegrated the Murong Hsien-Pi had carried out thoroughly the feudalization by transformed form tribe to family. Its feudalized process has reflected the unit process and the rules which our country nationality fuses. Therefore the study of Murong Hsien-Pi history has the practical significance today.

但由于种种原因,慕鲜卑政权都存在时间不长,而慕鲜卑在其政权解体后,由部族而家族,彻底完成了封建化,其封建化的过程体现了我国民族融合的基本过程和规律,因此,慕鲜卑历史的研究在今天仍具有现实意义。

During the optimization, we should calculate the oilcan cubage of the start station, output oil deposit and the final station according to different transportation circle, and calculate the oil mixture sum and the management fee according to transporting sequence, then finally decide the optimum transportation circle and the cubage of oilcans.

优化批次、罐时应根据不同批次分别计算首站罐、分输油库和末站罐,并根据输送顺序计算混油量以及混油处理的各项费用,最终确定管道的最优批次和罐配置。

An equation for the specific heat capacity of liquids which contains four constants hasbeen developed in this paper by means of analysis of data of heat capacities and properties offunction curves and its form is simple and convenient for use.

在液相比热的研究方面,已有很多学者根据饱和液体比热的实验数据关联出了较多的饱和液体比热的方程式,但还没有专门针对过冷液体定压比热而研制的方程式。

From the lifespan of relay point of view, a reliability criterion was provided based on dynamic characteristics of anti-forces. Mathematical model of tolerance design with reliability was set up under usage of "stress-strength interference method", taken some critical dynamic characteristics as identification objects such beginning of contact separation speed, speed of collision and gag bit impact velocity. This model showed that lower values of characteristic parameters center and quantitative descriptively relationship between tolerance and product reliability. Multi-objective optimization model of relay tolerance distribution was completed when some factors such as reliability, processing costs and its feasibility into consideration. Based on Analytic Hierarchy Process to determine weight coefficients of various objectives, and usage of simulated annealing, this study performed optimal reliable tolerance allocation of space electromagnetic relay, and then key technology segments were analyzed, accompanying its course measured by controlling chart.

从继电器电寿命的角度,基于动态吸反力特性的配合提出了继电器的可靠性判别准则;在此基础上以触点分离初速度、触点碰撞速度以及衔铁碰撞速度等关键动态特性为判别对象,采用"应力-强度干涉法"建立了继电器可靠性差设计数学模型,给出了下位特性参数中心值及其差与产品可靠度之间的定量描述关系;综合考虑可靠度、加工成本及加工可行性等因素建立了继电器差分配的多目标优化模型,基于层次分析法确定了各目标的权重系数,并采用模拟退火法实现了航天电磁继电器的可靠性差最优分配;研究了继电器的关键工艺环节,并通过控制图对其过程能力进行了分析。

The difference of bulk density of coastal soils took an effect on infiltration rate and diffuse rate. The infiltration rate and diffuse rate of coastal soils which bulk density was small were big. The water transmitting experiment of coastal soils showed that the saturated conductivity of different layers in soil profile were great, and the saturated conductivity of undisturbed soil was highly higher than that of disturbed soil. The saturated conductivity of coastal soils embanked earlier was lower than that of coastal soils embanked later. Under different water content, the unsaturated conductivity of coastal soils had a great change and the bulk density had an effect on unsaturated conductivity. The soil with a low bulk density had a high unsaturated conductivity. Chlorine ion moved in coastal soil was an inert ion. The distribution of CU in soil was definite and repeated, which is no relation with the time and velocity of infiltration. The concentration of infiltration solution and the texture of coastal soils had no apparent effect on solute movement synthetic dispersion coefficient, while bulk density took an apparent effect on solute movement synthetic dispersion coefficient. Synthetic dispersion coefficient of coastal soils increased as bulk density decreased.

浙江大学硕士毕业论文浙北海涂土壤水分特性及溶质运移模拟研究 4、海涂土壤的导水能力强,且土壤剖面备土层的饱和导水率变化大,原状土的饱和导水率远大于扰动土的饱和导水率,围垦时间较早的海涂土壤的饱和导水率较围垦时间晚的海涂土壤的饱和导水率要小;不同含水量下的非饱和导水率变化范围很大,最大值与最小值差距可达 10'③ 5、重的不同对入渗率、扩散率、非饱和导水率都有影响,重小,入渗率、扩散率、非饱和导水率也花 6、在海涂土壤中运移的氯离子是一&惰性离子&,氯离子在土壤运移过程中的分布有一定的确定性和重现性,与入渗时间和入渗速度无关,溶质运移过程中,入渗溶液的浓度和海涂土壤的质地对溶质运移综合扩散系数DSh无明显影响,而土壤重对溶质运移综合扩散系数DSh有影响,重小,DSh大。

The saturated water content, field moisture capacity, wilting coefficient, available water, readily available water, slowly available water of experimented soils respectively has negative power, logarithmic, exponential, exponential, exponential, power, logarithmic relationship with soil bulk density.

土壤重对土壤水分蓄持能力有较大影响,土壤蓄水能力随重增大递减,比水量也随重增大递减,土壤饱和含水量、毛管断裂含水量、田间持水量、凋萎系数、有效水含量、易效水含量、迟效水含量与重分别呈幂函数、对数、指数、指数、指数、幂函数、对数关系。

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推荐网络例句

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力