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Some palms, mangroves and other tropical trees form woody prop roots, often called stilt roots.

一些棕榈、红树和其他热带树木形成木质支柱根，通常称为升高根。

Stilt roots : these are adventitious support roots, common among mangroves .

高跷根源：这些都是不定的支持根，除常见的红树林。

Most aerial roots and stilt roots are adventitious.

多数气根和棚屋根不定。

Some of Hazel Perfect's results on positive stochastic matrix with real characteristic roots are applied to the quasi-stochastic matrix with known characteristic roots is given.

又把Hazel Perfect对于随机矩阵实特征根的理论，推广到拟随矩阵，最后给出一个已知实特征根求拟随机矩阵的方法。

They function as prop roots, as in maize or anchor roots or as the trunk in strangler fig .

他们充当支柱根，如玉米或锚根或作为主干扼杀者无花果。

The present thesis showed that root elongation of alfalfa (Medicago sativa L.) during a 24-h period was inhibited by 80% by the exposure to 5 umol L-1 Al and its roots was obviously stained by eriochrome cyanine R; however, the roots of stylo need to be exposure to 30umol L-1 Al in order to get obviously stained with its root elongation was inhibited by 68%, which shows, for stylo, its ability of tolerance to aluminum is strong.

本研究发现，5 μmol L~(-1)AlCl_3使紫花苜蓿根长抑制80.0％，铝处理后的根尖被铬天青明显染色，而柱花草经30 μmol L~(-1)的AlCl_3处理后方观察到根尖明显染色的现象，根的伸长受抑制68.0％，表明柱花草抵御铝毒能力较强。

Fleshy taproot of it from different sources, thus a plant, it can be in the number of lateral roots in many or more adventitious roots formed ...

它与肉质直根的来源不同，因而在一棵植株上，可以在多条侧根中或多条不定根上形成多个块根。。。。

Methods In order to shortening operative time limitation of laminectomy was selected for exposing the L4-S1 posterior nerve roots,The percentage of roots to be sectioned depend upon the tonus preoperatively.

方法为缩短手术时间，术中行限局性腰骶部椎板切除，将显露在视野内的L4至S1脊神经前支切断。

Most of the nutrients,for example polysaccharide,in root were much higher than those in 1-year-old branches,otherwise there was no significant change in the mineral elements between roots and branches.It is said that the roots and the branches of tree peony are the main organ of the nutrients storage and path of nutrients transference respectively.

是世界上园艺化最早的植物之一，是我国的传统名花，作为观赏栽培已有1600多年的历史[1]，在长期的栽培过程中人们对它们的生长习性有了深入的了解，对其繁殖与栽培管理积累了许多宝贵的经验[2～4]；然而牡丹的施肥管理却仍停留在传统的施肥方式上，这无疑影响到牡丹产品质量的均一性，降低牡丹的观赏价值。

There were so huge roots and rhizome system under ground that they could absorb water from deep soil; Stems and leaves on ground could decrease water loss. The huge biomes of G.uralensis had strong drought resistance superiority. In the same time, drought stress significantly restrained the growth of G.uralensis. On the contrary, in some extent, drought stress could improve the growth of roots under ground and resulted in increasing the rate of root/shoot; moreover, made the color of velamen become red and enhanced the output and the quality.

主要结论如下：(1)在形态与生长反应方面，观察发现甘草地下和地上两部分都具有适应干早环境的特征，地下有庞大的根和根茎系统，吸水能力很强，地上茎叶形态表现出很强的节水能力，并且甘草群体抗旱优势很强；同时也观测到干旱对甘草地上茎叶生长抑制较为明显，但在一定程度上对地下根系生长起到了促进作用，导致根冠比增大、根皮颜色变红，即在产量和质量方面都有了很大地提高。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。