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The main results were as follows:An appropriate concentration of ethephon sprayed on leaves of peanut made stems and branchs height shorter,but more branches;The fresh weight and dry weight per unit of leaf area and per plant increased;It optimized some physiological and biochemical characteristics in the leaves.It was showed that the ethephon increased obviously the contents of protein and chlorophyll and the activity of SOD and POD in the leaves,and improved the rates of photosynthesis and transpiration of the leaves,and increased the activity of the roots,but decreased the content of MDA in the leaves;It improved the quantity of pods,the percentage of plumy pods and the peanut yield.

结果表明:喷施适宜浓度的乙烯利可使植株相对矮化,抑制花生地上部分的生长,使主茎和分枝长比对照短,但分枝数较多;提高单位叶面积鲜重、干重以及植株鲜重、干重;优化花生植株的生理生化特性,表现为显著提高了花生叶片的蛋白质含量和叶绿素含量及SOD和POD活性,增强了花生叶片的光合速率和蒸腾速率,增强了主根活力,降低了花生叶片的丙二醛和可溶性糖含量;提高植株的单株结荚数、饱果率和产量。

According to Duhamei theory and method of binominal calculating productivity and combing with production of gas well, bore hole pressure is suggested so that a forecasting model for testing pr.

在Gringarten等人提出无限导流垂直裂缝模型解的基础上,通过对产生的裂缝进行微元段划分,结合均匀流率垂直裂缝模型,得出了裂缝微元段数为200时的井底不稳定流动压力的半解析解,根据杜哈美原理和二项式计算产能的方法,结合气井生产,提出拟合井底压力的方法,得到一种专门针对无限导流垂直裂缝模型的多产量测试产能预测模型。

The simulation results of the cylinder-block model were given in the article, consistent with that of Middlemen"s. It was shown that the block part could improve the uniformity of the flow distribution. The analysis of the flow field of some materials with different power-law factor in the die designed by Mckelvey was close to that of Mckelvey"s. It was shown that the flow distribution was uniform in the die that can producesheets with 1200mm in width. During the analysis the flow channel was divided into several parts to get the details about the fluid flow in each area. A conclusion was drawn after analyzing the influence of the die pressure on the flow distribution, that the higher pressure is good for the output and bad for the uniformity of the distribution. Simulation of the die applying the cylindrical main runner showed the fact that when the cylinder replaced the cone the change of uniformity was trivial. The uniformity of the non-block flow channel was so poor that the block in the proper position of the die channel was necessary. The project of the die for the wider sheet was put forth, and the analysis of the fluid flow in the die was shown.

本文模拟了圆柱管缝隙流模型的三维流动场,得到了与Middlemen结论一致的流动均匀性,并通过模拟直观地展示了采用阻尼块可以改善挤出均匀性的现象;分析了多种幂率指数的流体在Mckelvey等人设计的流道模型中的流动分布,得到了与Mckelvey的分析结果接近的压力降和流量偏差;本文建立了1200mm幅宽机头流道的三维有限元模型,并逐个分析各个区域和多个截面的流动分布状况,由此揭示了1200mm幅宽L-型机头流道内的流北京化工大学硕士学位论文动分布基本均匀,并在分析了机头压力对于挤出流动分布的影响后得出结论:较高的机头压力可以获得较大的产量,但是不利于物料均匀分布;模拟了采用圆柱管主流道时机头流道内的流动分布,得出结论:主流道由圆锥管改为圆柱管时对流动均匀性影响不大,通过设置适当的阻尼仍然可以达到挤出平衡;模拟了两端进料式圆柱管无阻尼流道的流动均匀性后得到结论:两端进料式无阻尼结构的流动均匀性较差,宽机头中仍然有必要设置阻尼块;确定宽幅机头流道的基本方案,并设计了一种宽幅防水卷材挤出机头流道的结构,通过流动模拟表明该种结构的流动均匀性较好;考察了宽幅机头对于不同厚度片材的挤出适应性,得到结论:当生产不同厚度的片材时,阻尼块高度需要调整。

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推荐网络例句

I'm strongly against the death penalty — it's an eye for an eye.

我不赞成死刑——这是以牙还牙的报复行为。

And to get you the support you need, we're enlisting all elements of our national power: our diplomacy and development, our economic might and our moral suasion, so that you and the rest of our military do not bear the burden of our security alone.

并给你们所须的支援,我们正徵召国家所有各种的力量:我们的外交及发展,我们的经济力量与道德劝说,所以你们与其他军人不须要孤独地负起国家安全的责任。

Imagine yourself to be an actor in a play on the stage.

设想你自己是一个演员在舞台上表演。