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Second, this research analyzed Chinese tobacco leaf and cigarette production, consumption and international trade, and focused to analyze the cost and revenue of tobacco leaf production, concentration ratio of cigarette market, marketing structure, marketing performance, accretion process in every value chain link ,and the profits allocation of each market body.

然后描述和分析了中国的烟叶和卷烟生产、消费、国际贸易情况，对中国烟叶生产成本收益、卷烟市场集中度、市场结构、市场绩效、价值链各个环节增值过程和各市场主体的利益分配进行重点分析，最后从烟草产业各个环节相互协调的角度提出了整体的发展战略和政策建议。

The leaf modules of different age tillers of grey green and yellow green ecotypes had the same regulation of allometry and biomass accumulation at the reproductive stage in the Songnen Plain. All quantity indices, such as biomass, length and width of leaf and regulation of biomass accumulation, were different between the two habitats of the same ecotype and between the two ecotypes at the same habitat. The results showed both ecotypes had adapted to their corresponding habitat and obviously had ecological plasticity.

在松嫩平原的繁殖期，灰绿型和黄绿型羊草不同龄级分蘖株叶构件具有相同的异速生长和生物量积累规律。2个生态型羊草叶构件的生物量、叶长、叶宽、生长和生物量积累规律等在相同生态型不同生境之间，相同生境不同生态型之间，以及不同龄级分蘖株之间的各个数量指标均有一些差异，但变化幅度不大，是2个生态型对其所在生境产生的相应适应性反应，具有明显的生态可塑性。

Among them Aloe vera and Aloe arborescens, more appropriate for industrial production, were selected for further investiment on the contents of active components in relation to leaf position and leaf part, isolation and purification of gel and skin polysaccharides, thermal stabilities of active components including polysaccharides, aloin and protein.

在此基础上，对库拉索芦荟和木立芦荟中的活性成份与叶片生长位置的关系，芦荟皮多糖和凝胶多糖的分离提纯，芦荟活性成份的热稳定性等方面进行了深入的比较研究。

Plumage wild cabbage calls foliaceous peony, peony dish again, because its leaf is lubricious rich and proper limits for speech or action is changeful, foliaceous form also is endless and identical, foliaceous brim has the different color such as amaranthine, green, red, pink, face of blade has weak yellow, green wait for color, whole plant shapeliness resembles peony, so plumage wild cabbage also is called by people land " of " leaf peony, and because its Xie Sefeng is rich changeful.

羽衣甘蓝又叫叶牡丹。牡丹菜，因为它的叶色分寸丰富而且多变，叶形也是不尽相同的，叶的边缘有紫红。绿。红。粉等不同的颜色，叶面则有淡黄。绿等颜色，整个植株外形似乎牡丹，所以羽衣甘蓝也被人们地称为"叶牡丹"，而且因为它的叶色丰富多变。

Results: Oxidation resistance effect of 0.10% loquat leaf flavanone was close to that of 0.05% tertiary butylhydroquinone, indicating the loquat 1eaf flavanone had obviously oxidation resistance effect to the fat with quantitative relationship. Antiscorbutic acid and the loquat leaf flavanone has the coordination oxidation resistance effect.

结果：0.10%枇杷叶黄酮的抗氧化效果和0.05%叔丁基对苯二酚相近，表明枇杷叶黄酮对油脂的抗氧化效果明显，且作用呈一定的量效关系，抗坏血酸与枇杷叶黄酮有协同抗氧化效应。

The total genomic DNA of diseased apple leaves was rapidly obtained by modified CTAB method. Through PCR amplification assay, the pathogen of apple scab can be specifically detected from diseased apple leaf tissues and no symptom appearance of apple leaf tissues with pathogen incubation.

采用改进的CTAB法，快速提取发病叶片组织的DNA，并结合PCR检测技术，可从苹果黑星病显症叶片以及未显症而处于潜育期的叶片组织中特异性地检测到苹果黑星病菌。

In the"willow leaf"TEM horn, the characteristic impedance varies from 50Ω to the 377Ω free space impedance, thus its metal plates have shapes similar to willow leaf. The constant impedance TEM horn consists of two tri-angular metal plates, with it's characteristic impedance at arbitrary cross-section being a constant.

采用FDTD方法，对'柳叶'TEM天线、恒阻抗TEM喇叭天线及低频补偿TEM喇叭天线的反射特性、口面场分布、主轴辐射场特性、辐射场方向特性进行了分析，并对各自的特性进行了比较。

It is found that with the increasing of N , leaf reflectance increases and reaches an asymptote while leaf transmittance decreases and reaches an asymptote also.

同时，给定叶绿素和水分含量，还模拟了当叶肉结构参数变化时的叶片的光学特性，随着N的增大，叶片的反射率逐渐增大，并渐趋一致，而透过率随着N的增加而渐减小，最后也逐渐靠近。

From analyzing the picture of autoradiograph of developing leaf,acceleration of leaf growth and development under elevated CO_2 was furthersupported.

利用~(14)C-蔗糖饲喂方法并结合放射自显影及放射性同位素检测技术对CO_2浓度升高影响叶片转运蔗糖方式和过程进行研究。

Winter buds 3 per leaf axil with 2 lateral flower buds and 1 central leaf.

冬芽3 每叶腋具2侧花芽和1 中心叶。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。