查询词典 yield spread

The result indicated that the main factor that affect the biophysical potential (PS1 level) is the sunshine hours, and the actual lint yield was only half of the simulated lint yield on PS1 level, there is still a great yield gap to be shorten through the improvement of soil management, fertilizer use, irrigation scheduling, plant protection, etc.

由于空间数据库和模型的不完善，本文没有考虑其他气候风险类型，诸如霜冻、秋季低温等；黄淮海平原的大部分地区都具备灌溉条件，本文在分析棉花生产气候风险时，没有根据雨养条件（PS2水平）下的风险分析提供灌溉决策方案。

Valuations remain within a fairly reasonable range despite the narrowing yield gap between the 10-year Treasury bond yield and the current earnings yield for HSI.

尽管十年期美国国债收益率及当前恒生指数股息率之间的差异在缩小，股市估值仍然在相对合理的范围内。

For this reason, the generic term yield stress is used, and it can mean either yield point or yield strength.

基于这个原因，一般是用名词产生压力，可以说是屈服点或屈服强度。

The most important issue of securlty markets is the return---risk relation and the retum---risk relation of bonds is reflected by the yield curve that describes the relation between yield to maturity and years to maturity, so yield curve is an important analytical tool which serves as the basis of analysis of the trend of the interest rate and bond pricing.

证券市场最重要的问题是收益一风险的关系，而国债的收益一风险关系就体现在描述到期收益率一到期期限的国债收益率曲线上，该曲线所表示的关系就称做利率的期限结构。

The crude protein content of L. multiflorum was high. At earing, it was 14.2%, with yield of 114.2 ( g/m~2). When herbage dry matter yield was significantly lower than Avena sativa , crude protein yield was significantly higher.

多花黑麦草的粗蛋白含量很高，抽穗期粗蛋白含量为14.2%，粗蛋白产量为114.2 g/m2，在干草产量显著低于燕麦的同时，粗蛋白产量却显著高于燕麦。

Path analysis showed that N translocation rate of culm was higher for the high fresh ear yield varieties,while the N translocation rate of culm and tassel was higher for the high fresh kernel yield varieties,and the N translocation rate of leaf,bracteal leaf and ear axis was higher for the high kernel yield varieties.In addition,higher N translocation rate of leaf had a beneficial effect on N utilization efficiency as for fresh ear,fresh kernel or maturity kernel of the produce of waxy corn.

通径分析表明，鲜穗高产品种茎秆的氮素转移率较高，鲜子粒高产品种茎秆和雄穗的氮素转移率较高，成熟子粒高产品种叶片、苞叶及穗轴的氮素转移率均较高；叶片的氮素转移率高有利于品种鲜穗、鲜子粒及成熟子粒氮素利用效率的提高。

In this paper, we studied community stability, forage quality and yield character about the mixed-sowing of Medicago sativa and Bromus intermis from 2003 to 2004 and using Factor Analysis, Principal Components Analysis methods and getting the yield forecast model with linear regress multianalysis method. The study provided theoretical foundation for establishing high yield and good quality artifical pasture.

本试验以紫花苜蓿与无芒雀麦为供试材料，于 2003~2004 年对 6 个不同混播处理的群落稳定性、牧草产量及质量性状进行了系统的研究，并运用因子分析法、主成分分析法和多元线性回归的方法，建立了产量预测预报模型，结合经济效益评价和提高土壤肥力的因素，确立最佳混播处理。

The effect of zeolites ion-exchanged by transition metals on thermal catalytic cracking reaction is studied. The product distributions of the cracking reactions catalyzed by theβor ZSM-5 zeolites exchanged with transition metals are different from that catalyzed by corresponding Hzeolites, which means the mechanism of cracking reactions has varied. Group Ⅷ metals Fe, Co, Ni and Cu, Zn are shown to be of strong catalytic activity of oxidative dehydrogenation, while Ti and Cr are not of oxidative activity. Catalyzed by zeolites or catalyst containing Ag, conversion of thermal catalytic cracking reactions and the yield of ethylene increase while the yield of propylene does not decrease. Silver can not only promote the formation of carbonium ion, but also convert carbonium ion into free-radical via redox reaction. The weak adsorption of olefins on silver reduces the occurrence of hydrogen transfer and dehydrogenation. As a result, the yield of light olefins is favored by silver in the catalyst.

采用过渡金属交换的分子筛作为催化剂，进行催化热裂解制取乙烯的反应，研究发现，在β沸石分子筛和ZSM-5分子筛中引入过渡金属后，催化热裂解反应的产物分布与相应的氢型分子筛相比有了较大的变化，说明过渡金属的加入对于催化热裂解反应的机理具有影响，Ⅷ族金属如Fe、Co、Ni和第Ⅰ、Ⅱ副族Cu、Zn表现出较强的氧化脱氢活性，产物中氢气、焦炭的产率很高，Ti、Cr则未表现出氧化作用：分子筛及催化剂中引入银后，催化热裂解反应的转化率和乙烯的产率有了提高，丙烯产率没有很大的变化，说明银在催化热裂解反应中能够促进正碳离子的生成，又有可能通过氧化-还原作用部分改变反应机理，促进了自由基的生成，并且由于银对烯烃的吸附很弱，其氢转移反应和脱氢、加氢活性比较低，有利于烯烃产率的提高。

A synthesis of 2-pentylidene cyclopentanone starting from cyclopentanone and n-valeraldehyde through aldol condensation, followed by dehydration, was studied, and the yield reached 85.6%. 2-Pentenyl cyclopentanone was prepared in a yield of 95.0% from 2-pentylidene cyclopentanone with a hydrogenation methodology. Through Baeyer-villiger oxidation,δ-decalactone was synthesized in a yield of 63.9% from 2-pentenyl cyclopentanone with hydrogen peroxide.

研究了以正戊醛和环戊酮为起始原料，经羟醛缩合、脱水反应合成2-戊叉环戊酮，产率达到85.6%，2-戊叉环戊酮加氢制备2-戊基环戊酮，产率为95.0%，2-戊基环戊酮在双氧水作用下经Baeyer-villiger氧化重排反应合成δ-癸内酯，反应产率为63.9%，合成δ-癸内酯的总产率为52.0%，气相色谱分析纯度为98.7%。

Highly significant differences were observed between the locations and years for fresh yield, defoliated yield and dry yield.

结果显示，在南非纳塔尔地区，红麻产量的基因型和环境相互作用显著。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。