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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。

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。

In a maturing soybean plant, most of the assimilate from a leaf went into the pod at the axil of that leaf

在一个正在成熟的大豆植株中，一片叶子的大部分同化物都进入叶腋的荚里。

Of ch a, and value of cha b/ carotinoid and cha b/flower pigment are both reduced in ChangLi 15 and Purple leaf plum, the color of the leaf is moreobvious; Under shade environment, ch a/b is reduced.

叶绿素对干旱胁迫的敏感性大于类胡萝卜素，干早胁迫对叶绿素b的伤害大于叶绿素a，到重度胁迫时，两个品种叶绿素b含量分别比对照降低了32.9％和37.7％。

The results showed that different Catalpa spp. had significant variance in height, diameter, length to width of leaf, leaf numbers per plant and net photosynthesis rate.

结果表明：不同品种楸树幼树的高生长、直径生长、叶片长宽比、单株叶片数和净光合速率等生长和生理指标存在显著差异。

This paper deals with the leaf shape design of multi-leaf collimator used in 3-dimensional conform al radiation therapy.

讨论了三维适形放射治疗中的多叶组合光栅的叶片设计。

The results indicated that the etiolation cause of the substrate mature leaf was the deficiency of available nitrogen in the soil. Spraying urea on the yellow leaves can turn the color of substrate mature leaf to green, but it does not have such effect on new shoots.

结果表明，土壤中有效N含量低是导致茶树下部成叶黄化的原因，喷施尿素能使下部成叶快速转绿，但并不能使上部新梢转绿。

In addition, the edges, veins, skeleton and fissility of plant leaf are also primary features for plant morphology. So we also studied the method of the automatic extraction of these structural features from leaf images, which is a necessary step to design an automatic plant species system.

另外，叶片的叶缘、叶脉、骨架、裂深等叶片结构特征是植物数值分类学的主要分类性状，也是植物形态学分类的依据，通过数字图像处理技术实现这些性状的自动提取，是计算机辅助植物物种识别的重要内容和必然环节，所以对这些叶片结构特征的自动提取方法也进行了研究。

Compared diploid fodder beet with tetraploid fodder beet, tetraploid plants put up characteristics of bigger and thicker dark green leaf, more folds on leaf, stronger footstalk and so on .we can take those characters as the advancing index in testing tetraploid fodder beet.

饲用甜菜四倍体植株与二倍体植株相比，表现出叶片增大变厚，叶色浓绿，叶面多皱褶，叶柄粗壮等特点，可以将这些特点作为饲用甜菜四倍体田间初步筛选的指标。

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。