查询词典 yield point

The measured results show that the shape of the yield curves changes with increasing illumination time due to the faster quantum-yield degradation rate of low energy photons.

基于修正后的反射式阴极量子效率公式对这种变化进行了理论分析，发现与光电子的谷间散射和阴极衰减过程中表面势垒形状的变化有关。

The affections on the yield of DLLA caused by catalyst, temperature and time etc. were studied. By using ethylene glycol as diluent, the distillate temperature of DLLA was lowed and the carbonization phenomenon could be avoided, which caused the yield of DLLA increasing from 36.8% to 51.3%. The molecular weight of PDLLA prepared by this method could reach 184,000. DLLA and PDLLA was characterized and analyzed by DSC, XRD and IR.The key of direct method to synthesize PDLLA is the exclusion of H2O from reaction system.

丙交酯开环聚合制备PDLLA的关键在于中间体D，L-丙交酯的制备，研究了催化剂、反应温度、反应时间等因素对DLLA产率的影响，通过在反应体系中加入稀释剂乙二醇，DLLA的馏出温度明显降低，避免了DLLA在蒸馏过程中产生碳化现象，并使DLLA的平均产率由36.8％提高至51.3％，制备的PDLLA分子量最大值达18.4万。

Of experimental materials, the yield of Nongza-62F1 was the highest, along with higher competitive dominancy. In contrast, the yield of H16 was the lowest, along with lower competitive dominancy.

在试验材料中，农杂62的产量最高，F1竞争优势大，而其F2，F3衰退率也最大；H16的产量最低，F1竞争优势最小，而其F2，F3衰退率也最小。

However, only 4 of the loci involved had single-locus effects, indicating the complexity of epistasis and their important contributions to yield and yield component traits.

共检测到17对QTL加性和环境互作，以及14对上位性QTL与环境的互作，表明环境因素对产量和产量构成因子性状起重要影响作用。

A better understanding of the role of PPAR in insulin action system will be critical in developing more efficacious and safe agent s that act on PPAR and benefit patients with type 2 diabetes. The main content is followed: Synthesis and analysis of 1,3-dicarbonyl compounds. Make use of easily available cheap reagent such as 2-naphthol, 6-hydroxyquinoline, 1,2-dibromoethane, 4- hydroxybenzaldehyde, dimethyl malonate, 2-{4- [(2-napthoxy)ethoxyl] benzyl} malonates and 2-{4 [(1,2,3,4-tetrahydro-6 -quinolinoxy)ethoxyl] benzyl } malonates were synthesized through 6-8 steps in virtue of Williamson, Knoevenagel reaction, Pd/C catalyzed hydrogenation with mild conditions and high yield. The total yield of 40-50%.

本论文的主要内容和研究结果如下： 1，3-二羰基类化合物的合成及分析，采用2-萘酚、6-羟基喹啉、1 ，2二溴乙烷、对羟基苯甲醛、丙二酸二甲酯等常见易得试剂，利用Williamson反应、Knoevenagel反应、钯碳加氢等条件温和且收率高的方法，分别合成了2-{4- [(2-萘氧)乙氧基]苄基}丙二酸衍生物和2-{4 [(1，2，3，4-四氢-6-喹啉氧基)乙氧基]苄基}丙二酸衍生物两个系列8个化合物，经6-8步反应，总收率为40-50%，具有一定绿色化学特性。

The low yield in seed production is an important limiting factor for the development of japonica hybrid rice, and the stigma exsertion rate of male sterile lines has a key effect on seed yield of japonica hybrid rice.

制种产量低是制约杂交粳稻发展的重要因素，而不育系柱头外露率是影响杂交粳稻制种产量的关键。

But it can yield robust, extendible architectures; this is the kind of structure that object-oriented techniques, properly applied, will tend to yield.

但是它能产生健壮的，易扩充的架构；这种结构，适当地加工就可以产生面向对象技术的结构类型。

The maximum yield of FAMEs was 93% after 12h and after 14 cycles the yield of FAMEs was still above 70%.

在此条件下固定化酶连续使用14批，产率仍然可保持在70%以上。

On reaction rate and yield as evaluating standard for different methods, the potassium ferricyanide oxidation and H2O2 oxidation for octreotide were found to be superior to other methods in less reaction time and high oxidation yield.

从氧化速率及氧化效果的方面考虑，发现铁氰化钾氧化法和H_2O_2氧化法对还原型奥曲肽的氧化效果更优。

The effects of different sowing dates for two varieties of field pea have been examined through field site observations in an arid area of the Loess Plateau over two years. The experiment focused on two varieties of field pea, Green pea, which has high yield, and Yannong 2, which has low yield.

通过定位试验，探讨了黄土高原旱地不同播种期对豌豆产量的影响，供试材料为绿豌豆和燕农2号。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"