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Leaves. Result: Extraction temperature had effect on total flavonoids yield, and ethanol concentration had more obvious effect than extraction temperature. The more natural storage time, the less total flavonoids content, and the average descent rate was 24.74% per year. The flavonoids content from Lithocarpus polystachyus Rehd. gathered between August and October was the highest. The total flavonoids content was higher in the new leaves of Lithocarpus polystachyus Rehd.

结果：乙醇体积分数对总黄酮提取量有显著影响，提取温度对总黄酮提取量有影响；多穗柯自然存放时间越长，总黄酮含量越低，平均每年下降24.74%；不同季节采摘的多穗柯其总黄酮含量以8~10月最高；经对怀化多穗柯嫩叶和老叶中总黄酮的提取测定表明，多穗柯中嫩叶总黄酮含量最高，二年生最低。

Leaves both basal and cauline, petiolate or not; leaf blade simple, entire, margin dentate or lobate; cauline leaves usually alternate, rarely opposite.

叶都为基生和茎生，与否具叶柄；单叶，全缘，边缘具牙齿或浅裂；茎生叶通常交替，很少相反。

It was then introduced by gene pulser into acrystalliferous strain CryB and a recombinant strain CryB (pBMBZGC10) was obtained. Different fermentative solutions of recombinant strain were used for multi-spray on leaves of Brassica pekinesis, Ipomoea aquatica and Lycopersicon esculentum. Results by using fluorescent detection and PCR amplification revealed that cry1Ac10 gene could not been detected in roots, stems and leaves of plants tested. The cry1Ac10 gene was also not transferred into indigenous bacteria, actinomyces and fungi in soil.

苏云金芽胞杆菌标记重组菌株与杀虫基因水平转移的研究将重组菌株CryB（pBMBZGC10）的发酵液按浓度梯度分次进行喷洒小白菜、蕹菜和番茄作为供试植株，利用标记基因研究的结果表明：cry1Ac10基因没有向供试土壤细菌、真菌和放线菌转移，也未在植物的供试植物根、茎和叶中检测到该基因。

The relative conductivity of leaves, ultrastructural changes of mesophyllous cells under heat acclimation and heat stress, the differences in gene expression of leaves under hest shock can be used as physiologic, cytologic and molecular biologic indexes respectively for evaluating heat tolerance.

在热锻炼和热胁迫过程中叶片相对电导率、叶肉细胞超微结构的变化，以及热击条件下叶片基因表达差异，可分别作为耐热性评价的生理学、细胞学和分子生物学指标。

ObjectiveTo obtain some basic data for the utilization of mulberry leaves, the total flavonoid content of mulberry leaves from different Morus cathayana germplasm resources were determined, and the differences were analyzed.

目的分析不同华桑种质资源桑叶总黄酮含量的差异，为桑叶资源的利用提供科学依据。

Young leaves of test-tube Shinichinose,a variety of Morus alba,were used asexperimental materials to investigate the effect of phytohormones and antibiotics onthe regeneration of in vitro mulberry leaves.

以白桑系品种新一之濑的试管苗幼叶为主要实验材料，探讨了植物激素和抗生素对桑叶片培养再生植株的影响。

Leaf margin inconspicuously mucronulate on current year leaves or shallowly crenate-serrate on two-year leaves; pith white to brown.

在当年叶或浅圆齿状锯齿关于二年的叶上具小短尖的叶缘不明显；髓白色的到棕色。 14 A。 cylindrica 柱果猕猴桃

But when we examined the structure of cultivar of D. huoshanense, endomycorhiza was founded unexpectedly. And in the wild type of D. huoshanense, fungi was also founded in its stems and leaves. So the author thought that endomycorhiza is not only located in the roots of Dendiobium plants, but also exists in other organs of plants, including stems, leaves. As plant produces seeds, mycorhiza could enter into the cells of seeds. When mature seeds germinate in media, the endomycorhiza enter into the roots of cultivar.

石斛属植物与真菌共生，根为菌根，作者在研究霍山石斛组织培养型结构时发现，组织培养苗的根部也分布有真菌，而且在野生霍山石斛的茎、叶中发现有真菌，作者因而指出，真菌并不是完全分布在根部，而是遍布于整个植物体，推测植物形成种子时，真菌进入种子，所以在组织培养时，真菌随着种子的萌发，进入植物体根部。

With the increasing of water lever, Myriophyllum spicatum increased the plant height, allocated more biomass to their leaves and decreased the allocation to roots and stems. However, Potamogeton maackianus allocated most biomass to their stems and decreased the allocation to leaves and roots.

实验发现：随着水位上升，狐尾藻株高也增加，并且将更多的生物量分配到叶片部分，减少对根和茎的资源投入；而微齿眼子菜则将生物量大部分投入到茎杆，减少对叶片和根的资源分配。

Myriophyllum aquaticum Verdcourt is a commonly cultivated, and nearly naturalized, species in Taiwan, characterized as follows: plants dioecious (only female plants known in China); aerial leaves glaucous or light bluish green; all leaves whorled, never entire, pinnately divided with linear segments; bracteoles subulate with 1(or 2) lateral lobes.

Myriophyllum aquaticumVerdcourt一通常栽培的，植株雌雄异株的(只女性的植株被在中国知道)；气生叶苍白的或浅蓝绿色；全部叶轮生，从未全缘的，成羽状全裂具线形裂片；小苞片钻形，具(1或)2侧叶裂片。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐