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There was no apparent structure of vasicular bundle sheath in the leaves. Thick cuticle layer was found on both abaxial and adaxial surfaces.

荔枝叶片叶肉组织内细胞的排列，除了在5天叶龄的幼叶排列非常紧密之外，其余叶龄的叶肉组织都会发现有空隙的存在。

Semi-thin sectioning and the method c.ommonly referred in histochemistry were used to study the development of vascular bundles in Aloe arborescens leaves with emphasis on the origins and tissue types of vascular bundle sheath cells and aloin-containing cells.

采用半薄切片和组织化学方法研究了木立芦荟叶内维管束的发育过程，并着重于维管束鞘细胞和芦荟素细胞的来源及组织类型。

Chloroplasts with numerous starch grains and few mitochondrias were noticed in the mesophyll cell surrounding the bundle sheath in weak light. The storage of starch grains appeared to result from an unbalance between photosynthate production and export of photosynthates.

淀粉粒的积累可能是由于光合同化产物的生产与输出之间的不平衡，这一观察结果有力地支持了大部分叶片是在光照条件下输出其大部分同化产物的观点。

Experimental results show that there are existing some indifferent mechanisms to the pollen sterilization of the Ms types: during the period of single nucleic to three nucleic pollen cell,we observed that the cell of xylem and phloem in anther septum abnormally developed,also the cell in the sheath of vascular bundle,smaller and arranged irregularly; the metabolic block developed too,es...

结果表明，不育类型的花粉败育有着一些共同的机理：在花粉单核期至三核期可见到花药隔维管束的木质部及韧皮部细胞发育较差，维管束鞘细胞发育不良，体积较小，排列紊乱；在单核花粉期至三核花粉期均发生物质代谢障碍，特别在花药部位尤为明显；由于维管束发育不良和花药物质代谢障碍，导致了花粉缺乏营养而败育。

In this experiment,X-ray diffraction apparatus was used forthe first time to examine and research on microdensity,crystallinity and microfibril angle.Through research on the radial variation of bamboo microdensity,this paper points out the conceptions of bamboo hull density and bamboo pulpdensity,and this provides basis for the multiple layer utilization of bamboo.Using computer image-processing technology to carry on precise examinationvolume fraction of bundle sheath,that is key factor to reveal the relationshipbetween bamboo structure and properties.For the first time using resonantvibration means to test the dynamic elastic module,the result shows very ideal.And for the first time researched on the variability of electric conductivityproperty of bamboo.

在本次实验中，首次使用X射线衍射仪对竹材的微密度、结晶度、微纤丝角进行测定和研究，深入研究了竹材微密度的径向变异规律，首次提出竹青密度和竹肉密度的概念，为竹材的径向分层利用提供依据；首次使用微机图象处理技术对竹材的组织比量，主要是纤维束比量进行了精确测定，从而为揭示竹材结构与材性关系打下基础；首次使用共振法对竹材的动态弹性模量进行测定和研究，测量结果是比较理想的；首次研究了竹材导电性的变异。

To elucidate the biological structure basis of transgenic rice plants expressing maize PEPC gene with high photosynthesis efficiency, PEPC transgenic rice and its wild type with at 3 leaves seedling stage were treated under 1000 μmol/(m^2s) light intensity for 100 min, respectively, and those under 200 μmol/(m^2s) light as the control. The structure of mesophyll cells, bundle sheath and thylakoids of the second blade were observed with a transmission electron microscope.

为了阐明转玉米PEPC基因水稻高光效的结构基础，以转玉米PEPC基因水稻和未转基因原种为试验材料，在水稻的三叶期，施以100min，1000μmol/的高光强处理，以200μmol下的水稻为对照，运用透射电镜观察叶肉细胞、维管束鞘以及叶绿体内类囊体片层结构。

From the point of microstruction,bamboo volume fraction of bundlesheath,single bundle sheath area,fiber width,cell wall thickness increase withthe growth of age,fraction of cell wall changes like density,increases with thegrowth of age,the 2 age-degree bamboo is the biggest.The reason why 2 age-degree fraction of cell wall more than 3 age-degree bamboo is the former has thegreater fraction of parenchyma;1 age-degree bamboo has the greatest fiberlength,fiber length and width ratio and vessel length.The difference in bamboofiber length,vessel length and width among other age-degrees is not distinct.

从构造角度来说，竹材的纤维束比量、单个维管束纤维束面积、纤维宽度、胞壁厚度随着年龄的增大而增大，胞壁率随年龄变化规律与密度相似，随年龄增大而增大，以2度竹最大，2度竹胞壁率比3度竹大主要由于薄壁组织比量较大所致；纤维长度、纤维长宽比、导管长度以1度竹最大，其它年龄纤维长度、导管形态变化不明显。

Through comprehensive comparison,during the growth from 1 age-degree bamboo to 2 age-degree bamboo,density, mechanical strength(except maximum tensile strength etc.),fraction of bundle sheath,cell wall ratio,crystallinity,cellulose content and lignin content increase rate are the greatest.3age-degree bamboo has higher strength,strength and gravity ratio andcrystallinity are the biggest,fraction of parenchyma is small and insect-resistant.2 degree bamboo has the greatest mechanical strength,but its strength andgravity ratio is not the highest and its crystallinity is lower than 3 age-degreebamboo due to its greatest fraction of parenchyma,loss tangent value is thebiggest.Its creep character is not good and is easily eaten by moth.

通过综合比较，竹材从1度竹到2度竹生长过程中，密度、力学强度、纤维束比量、胞壁率、结晶度、纤维素含量、木质素含量等指标增加幅度是最大的。3度竹强度较高，强重比、结晶度最高，薄壁组织含量较小，相对抗虫蛀，材质最好，适合材用。4度竹结晶度下降引起强度的下降，但薄壁组织组织比量最小，相对最抗虫蛀。2度竹力学强度最大，但是强重比并不是最大，结晶度比3度竹低，由于薄壁组织组织比量最大，内耗值最大，蠕变性能较差，同时相对易遭虫蛀。

And a self-imposed bundle of extra work is on the way.

并且自加的额外工作也随之而来。从

SQL Examiner Bundle simplifies your work as a developer or a DBA.

数据库考官束简化您的工作作为开发商或管理员。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。