查询词典 yield spread

For the aged aluminum alloys which generally contain disc/plate-shaped or rod/needle-shaped precipitates, a model has been established, from the viewpoints of thermodynamics, kinetics and strengthening theory, to relate quantitatively the yield strength to the size, volume fraction and aspect ratio of precipitates which all were analytical associated with the chemical compositions of alloys, aging temperature and aging time. This model has been experimentally proved to well predict the variation of yield strength with the evolution of disc/plate-shaped or rod/needle-shaped precipitates for present Al-4. 62wt% Cu-0.65wt% Mg alloy aged at 513K and Al-1. 12wt% Mg0.57wt% Si alloy aged at 463K, respectively, and the yield strengths simulated by this model were also found to be in well agreement with previously measured values for a series of aged Al-Cu binary alloys, AA6061 and Al-Zn-Mg alloys.

以析出热力学、长大动力学及强化理论为基础，研究了含有盘/片状、棒/针状时效析出强化相铝合金在时效过程中时效析出相尺寸、体积分数和长径比等参数的演变及其对合金时效强化效果的影响，给出了合金成分、时效变量与微观组织参数之间非线性的解析表达关系式，进而从微观结构—宏观性能相结合的角度出发建立起了具有盘/片状、棒/针状时效析出相铝合金的时效工艺—屈服强度量化模型，并将该模型应用于不同温度、连续不同时间时效下Al-Cu二元系列合金、6061铝合金和Al-Zn-Mg系列合金的屈服强度预测，得到了与前人实测值吻合良好的结果。

The said extraction process cna extract platinum family metals directly, and has Pt yield up to 96%, Pd yield up to 99% and total Cu, Ni and Co yield up to 98%.

采用上述③④⑤的工艺流程则可实现硫化矿中铂族金属的直接提取。本发明铂钯回收率可达到Pt96％，Pd99％，铜镍钴冶炼总收率达到98％以上。

The results of yield and water use efficiency in field show that yield can not reduce, butwater use efficiency can increase significantly from 〓 to 〓 when alternateirrigation by interval furrow compared to the well-irrigated plant. In 1997 and 1998,the resultsof field trails show that seeds yield is above 8000kg/ha meanwhile irrigation water can save from〓 to 〓 or 〓, about more than 33% water can be saved, water-saving profit is significant.

大田小区试验产量和用水效率结果表明：隔行交替灌溉后灌溉用水效率明显增加，可由常规灌水的〓提高到〓以上，总用水效率〓以上，1997-1998年两年试验结果表明籽粒产量保持8000kg/ha以上高产水平的同时灌溉用水量可由〓降至〓，甚至〓，节水达33.3％以上而不引起产量下降，节水效益显著。

Density has great effect on yield of root tuber, but its exhibition on colony and individual plant is different. It was shown that there was a negative correlation between the individual yield and density, while a positive correlation between the colony yield and density.

结论密度对白首乌产量性状影响较大，但在群体和个体上表现不同，与个体块根产量呈负相关，与群体根的生物产量呈正相关。

But the rhizosphere effects on spring-sown maize and summer-sown maize were quit different. At level of N1 and N2, rhizosphere effects had decreased the dry matter, grain yield, crud protein yield and crud fibre yield, while increased the grain starch content and the ratio of amylopectin to amylase.

两个氮水平下，根际作用对春玉米生物产量、籽粒产量、粗蛋白产量、粗纤维产量表现负效应，而对籽粒淀粉含量、直链淀粉含量、支链淀粉含量及支/直则为正效应。

Reaction of citric acid with paraformaldehyde gave anhydromethylene citric acid with a yield of 63%;the reaction of compound with acetic anhydride gave the corresponding anhydride with a yield of 87%;the esterification of compound with lauryl alcohol gave anhydrocitric acid monoester with a yield of 76%.

将等浓度的柠檬酸和多聚甲醛加热，反应生成柠檬酸缩醛环酯，产率为63%；与乙酸酐反应得到相应的柠檬酸酐，产率为87%；与月桂醇酯化，生成产物，产率为76%；用二氧六环做溶剂，将与等浓度的碱进行开环反应，生成柠檬酸月桂醇单酯，产率为83%。

Series pneumatic DTH hammer research is emphases project of national land and resource survey. On the basis of previous research and application, according to some questions in application, the project will research and exploit more to solve the common questions. Fact yield energy will be increased, then the method will be spread in fact yield.

为此，系列风动冲击器的研究被列为国土资源部地质大调查的重点项目，本项目将在以前研究应用的基础上，针对应用中出现的一些问题，进一步研究开发，解决实际生产应用中的共性问题，提高其实际生产能力，并大力推广到实际生产中去应用。

The yield spread between high-yield corporate bonds and Treasurys has widened to 8.29 percentage points, from 6.7 points on Memorial Day.

高收益公司债券与国债之间的收益率差已扩大到8.29个百分点，而阵亡将士纪念日（5月26日）时还是6.7个点。

When the higher risk paper is trading at a higher than normal yield spread, the higher risk security is bought and the lower risk security sold; when the spread narrows, the trade is reversed.

当风险较高的票据以高于一般的收益率差价进行交易时，则购进风险较高的证券，售出风险较低的证券；当差价缩小时，交易则按相反方向进行。

This text pressed an on trial pedestal each zero partses to carry on a detailed calculation and the school pit to the liquid in introducing the background of the topic research and the foundation of the meaning:Pass to draw up towards experimenting the pedestal system principle diagram, explain the work principle of the system and manipulate a method;Pass the calculation to the system pressure,discharge, choose the oil pump,pipeline and valve door;Pass the calculation to deliver the calories to system, make sure the physical volume of the fuel tank and choose heating apparatus with spread a hot machine;Pass to spread a design of move the system to the pump station, choose to keep the strength that the gear cone wheel gear spread to move to combine a school to check stalk.

本文在介绍课题研究的背景及意义的基础上，对液压试验台各零部件进行了详细的计算和校核：通过对试验台系统原理图的拟订，说明了系统的工作原理和操纵方法；通过对系统压力、流量的计算，选择了油泵、油管和阀门；通过对系统发热量的计算，确定了油箱的体积并选择了加热器和散热器；通过对泵站传动系统的设计，选择了直齿圆锥齿轮传动并校核了轴的强度。

In the chapter 2, the theoretic knowledge about the photosensitive resin and the grinding tools was firstly introduced.

第二章阐述了光固化树脂结合剂磨具的相关理论研究。

Do not use the program's indenting or margin-setting features; these will be added during typesetting.

不要使用缩排，页面边缘设置之类的选项，偶看不大懂。