查询词典 trend

The results showed that: with the regression analysis of Betula platyphylla, Pinus koraiensis, Abies nephrolepis, Picea koyamai var koraiensis, and Betula costata, there was a significant negative correlation between neighborhood interference index and the growth (0.40~0.89) and the correlation extent depended on the neighborhood influence zone and slope. The neighborhood influence zone corresponding to maximal regression coefficient R~2 was the neighborhood influence radius. Based on the linear subsection regression between neighborhood interference index and influence zone of five species, the neighborhood interference index increased with the increasing zone and there was a previous increasing trend in a certain scope, while the increasing trend slackened beyond the zone. The neighborhood influence zone corresponding to transition point was the neighborhood influence radius. The neighborhood interference index positively correlated with the neighborhood influence zone and the range of R~2 was 0.40-0.64. With the analysis of tree cores of Juglans mandshurica, Fraxinus mandshurica at middle and lower slope in a plot which was fostered in 1995, the distance which the growth release farthest neighborhood and object stub was judged, thus the neighborhood interference radius was inferred. According to the studies, we found that the neighborhood interference radius was different among different trees, even if the neighborhood interference radius of the identical tree species also had the difference at different slopes.

结果表明：通过对白桦、红松、冷杉、红皮云杉和枫桦树种进行邻体干扰指数与生长量回归分析发现，邻体干扰指数与生长量呈显著负相关(0.40～0.89)，相关程度因邻体影响范围和坡位而异，R~2达到最大值所对应的影响范围即为邻体影响半径；通过对白桦、红松、冷杉、红皮云杉和枫桦树种进行邻体干扰指数与影响范围的线性分段拟合，邻体干扰指数随影响范围的增加而增加，其在一定的范围内上升较快，而超出该范围后上升的幅度变慢，变化的转折点所对应的影n向范围可以判定为邻体影响半径，线性回归显著(0.40～0.64)；通过对1995a抚育的胡桃楸、水曲柳样树进行研究，分析邻体树种的中坡位和下坡位的生长锥芯，判断产生生长释放的最远邻木与基株树桩所对应的距离，推断邻体影响半径；根据研究发现，邻体影响半径因树种不同有一定的差异，即使同一树种的邻体影响半径在不同坡位也有一定的差异。

Increased at different extent and the content of GA3 and ZR were all down under drought stress, while the content of IAA had a different trend according to different material. The general trend of coordination among 4 endogenesis hormones was closeing the stoma and promoting the growth of root,whereas the coordination mechanism of different Dactylis glomerata L.

盆栽控水条件下4份鸭茅内源激素变化的研究结果显示，随着干旱胁迫程度的加强，四份鸭茅ABA含量整体呈上升趋势，GA3和ZR的含量则呈下降趋势，IAA的含量因材料不同表现出不同的变化趋势，干旱胁迫下四种内源激素的协调总趋势是向着气孔关闭，促进根系发展的方向进行。

It is with the United States exemple, from afterwar to 60 time end, the income gap of each estate is narrowing stage by stage, but after entering 70 age, this kind of trend produced change, difference of the rich and the poor presents distensible trend again.

以美国为例，从战后到60年代末，各阶层的收入差距在逐步缩小，但进入70年代以后，这种趋势发生了变化，贫富差距又呈现扩大的倾向。

Using Panel Data model to have a demonstration research for the dissertation of county economic development disparity from 1989 to 2004, and gets several significant conclusions:(1) There is aαtrend in county economic increasing disparity in China, there is also a emanative trend in county economy during theexamination of absoluteβ.

接着本文使用Panel Data模型对1989-2004年中国县域经济发展差异的收敛性进行了实证研究，得出了一些有意义的结论：(1)中国县域经济增长差异存在α趋异，另外在绝对β检验过程中发现中国县域经济整体存在发散的趋势。

Chapter Ⅱ The trend of 19 Th—century Chinese historical studies Here the trend refers to the process and the direction of historial studies.

第二章 十九世纪中国史学变革的趋势所谓史学趋势，实际上谈的是史学进程和走向的问题。

From the point of view of academic trend of thought,"the study of new social history", as a kind of new historiographic thoughts, and the holistic trend of the western historiography, almost simultaneously came forth on the stage of contemporary international historiography.

在某种程度上，英国新社会史学派既是西方新史学大潮中别具特色的史学劲旅，也是在马克思主义史学与西方新史学从长期对抗走向持久对话的过程中形成与发展起来的。

The first part of this paper is to analyse the development trend of China auto market especially family car from the aspects of macro-economic environment, the competitive structure and the development situation of China auto industry, following analyse and forecast the demand trend of auto industry especially family car in 2003 based on auto market demand, requirement incensement and market structure.

本报告的前半部分，主要是从宏观经济环境，中国汽车产业的竞争格局，中国汽车产业的发展形势等几个方面分析了中国汽车产业特别是家用轿车的发展趋势，接着从市场规模，市场增量和市场结构几个方面分析和预测了 2003 年汽车市场特别是家用轿车市场的购买分析。

This model has overcome the shortcoming of single CBP model and other models limited in ability to express with double trend prediction; also separated the time dependence and environmental factor, and respectively treated the two weight of the double trend, this model have fully utilized the advantage of the CBP isotropism characteristic.

最后，以云南某烟草公司某区域近6年的卷烟销售数据为研究模型试验研究对象，建立了APMSTS基于神经网络的烟草销售预测模型系统，系统从该公司数据库中进行实时增量抽取数据，以及录入该区域年鉴数据作为环境参考因子。

On longitude gradient, from east to west, there is a slight trend of diversity of Lauraceae plants, and no obvious trend was observed on specification strength. In general, the distribution center of Lauraceae plants is in the southern part of the study area with low latitude and altitude(elevation 1500-2000 m or so).

区系分化强度与纬度呈负相关关系，区系分化中心可能在低纬度地区；在经度梯度上，从东到西，樟科植物的多样性呈轻微递减趋势，但区系分化强度无显著变化；总体上，研究区域内樟科植物的多样性分布中心集中在低纬度、中低海拔（海拔1500-2000m左右）的南部地区。

This paper analyses the different concentrations of Pb, Zn ion hybrid seedlings on the soil culture camphor several physiological indicators of the impact of the results show that the experimental results show that, POD, SOD, CAT, such as the biological oxidation resistance of the show is basically change the trend promoting high-low suppression trend, proline, MDA membranaceous permeability, as well as the content, with the concentration of heavy metals increases, reflecting the biofilm was heavy metal ions damage situation.

本文分析了不同浓度的Pb、Zn混合离子对土培香樟幼苗的几种生理指标的影响，结果表明，实验的结果表明，POD，SOD，CAT等抗氧化性的生物酶的改变趋势基本上呈现低促高抑的趋势，而脯氨酸，丙二醛以及膜质透性的含量是随着重金属浓度的增大而增大，体现出了生物膜被重金属离子的破坏的情况。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。