查询词典 yield spread

It was found that the samples PVP-PdCl2-CdCl2 and PVP-PdCl2-HgCl2, compared with PVP-PdCl2, exhibited much higher catalytic activity and dechlorination selectivity, and the yields of the coupling by-products were obviously decreased. For example, when p-chloroaniline was used as substrate, the reaction time was shortened to 1/8, and the yield of dechlorination product was about 25 times as much as the original one, and when p-chlorotoluene was used as substrate, the yield of coupling by-product catalyzed by bimetallic catalyst was 1/390 of that catalyzed by monometallic catalyst.

与负载型单金属催化剂PVP-PdCl2相比， PVP-PdCl2-CdCl2和PVP-PdCl2-HgCl2对氯代芳烃脱氯有高得多的催化活性和脱氯选择性，且偶联副产物显著减少；以对氯苯胺为底物时，双金属催化下的反应时间缩短为单金属催化下的1/8，而脱氯产物收率提高25倍；底物为对氯甲苯时，双金属催化下的偶联副产物仅为单金属催化下的1/390。

The yield of morpholine can be 35% and the yield mixed alcohol can be 42% under temperature of 210℃, pressure of 2.0 MPa, the mass ratio of the water and morpholine by-product was of 1:1, using sodium hydroxide as catalyst, and the amount of 1.5% for the by-product, reaction time of 4 hours.

在210℃，2.0MPa下，水与副产物的质量比为1：1，采用氢氧化钠为催化剂，用量为副产物的15%，反应时间为4小时，吗啉的收率可达35%，混合醇的收率可达42%。

The yield and the utilization rate of solar energy and heat increased by more than 20%. It showed that this new multiple cropping pattern is an effective way to further increase yield in this region.

该模式实现高产的关键是充分利用间套作复合群体高强度的纳密功能，并形成一个高光效的群体结构，使复合群体的受光改善和截光能力增强。

The experiment results show that this mode can increase multiple cropping index, tobacco income by over 2000 Yuan and maize yield by over 450 kg so as to reach the objective of in-creasing income and grain yield.

试验表明，该模式提高了复种指数，烤烟收入2000元以上，免耕玉米收入450㎏以上，达到钱粮双收的目的。

The yield differences among the three cropping patterns showed that intensive multiple cropping and reasonable adjustment techniques were effective ways to further increase field annual yield in this region.

三种模式产量梯度差异表明，在水肥供应基本充足的情况下，通过集约多熟种植并配合以合理调控技术是在高产基础上进一步提高产量的有效途径。

I strongly recommend high yield muni funds, which is not very sensitive to interest change, and also the yield is tax-free.

这几年可能会攒一点钱准备几年后买房，不知道像这种短期投资怎么考虑比较好，我想我可能还是会保守一点放到savingsbonds上了。

Myrica rubra in Zhejiang occupies an area of 38 000 hm2,with an approximate annual yield of 130 000.Ningbo,Taizhou and Wenzhou are the main producing homes,which account for 74.76%of the total in area and 78.39%of the total in yield of the whole province,respectively.

浙江省有杨梅3.8万hm2，年产量近13万t，主产区为宁波、台州和温州等3市，面积和产量分别占全省的74.76%和78.39%。

Correlation analyses indicated that the correlations of NAE to NUE and NHI in rice were very significantly negative,and the correlations of NUE and NHI to yield per plant were very significantly positive,but the correlations of NUE to NHI and NAE to yield per plant were not significant.

相关分析表明，水稻NAE与NUE、NHI呈极显著负相关，NUE与NHI间无显著相关；水稻NUE和NHI与单株产量存在极显著的正相关，NAE与单株产量无显著相关。

Attention has been paid in recent years to chlorocholine chloride used widely in agricultural industry,especially increase potato tuber yield and quality, prevent wheat lodge and cotton growth like mad (Cao et al.,1997; Yamamoto and Nakata,1997;Caldiz et al.,1998).However the effects improved potato yield by CCC are not incarnated adequately.

注重在近年来矮壮素的广泛使用在农业产业化，特别是增加马铃薯块茎产量和品质，防止小麦投诉和棉花生长的疯狂（曹等人， 1997年；山和中田英寿， 1997年； caldiz等人， 1998年），但效果改善，马铃薯产量由中华基督教会都没有充分体现。

This paper deals with the fertilizer rate for high—yield hybrid rice. By using the regression analysis, a hyperbola equation between soil natural nutrientsupplying rate and available nutrient content and a power functional equation between hybrid rice yield and nutrient uptake have been set up.

本文研究了高产杂交水稻的施肥量，通过回归分析建立的土壤养分自然供给量与土壤速效养分含量之间的双曲线方程和水稻产量与养分吸收量之间的幂函数方程，阐明了土壤养分自然供给量随土壤养分含量的变化而变化的规律和水稻产量与养分吸收量之间的关系。

You'll be in trouble it you don't watch out .

如果你不注意，你会有麻烦的。

Shaped like a biconvex lens.Of, relating to, or having the form of a hyperbola.

双曲线的属于双曲线的，与之有关的，或有双曲线形状的