三核的

Antipodal cells The three haploid cells found in the embryo sac of seed-bearing plants that migrate to the chalaxal end of the sac farthest from the micropyle.

反足细胞：胚囊三次分裂形成卵细胞，助细胞和极核等，其中位于合点端的三个单倍体细胞称反足细胞。

Due to their applications in magnetic, optical, electronic and catalyst, polynuclear lanthanide clusters are of importance. In this part, a series of nanowheel-shaped nonanuclear lanthanide clusters,〓〓(Ln=Sm~Tm; BA=benzoylacetone), were prepared and characterized. Each complex can exist in three phases, i. e., cubic, tetragonal and triclinic.

本论文第二部分在醇溶液中以三乙胺调变溶液pH，利用β-二酮配位方式的灵活性成功地构筑了一系列结构稳定、纳米尺度轮状的九核稀土配合物〓〓（Ln=Sm~Tm；BA=苯甲酰丙酮），并在不同溶剂中重结晶分别得到了三斜、四方以及立方三种晶型的晶体。

The relationship of six species from Alaudidae (Alauda arvensis Melanocorypha mongolica Calandrella cinerea Calandrella cheleensis Eremophila alpestris Galerida cristata) distributed in Inner Mongolia were studied from three aspects: Mostly in feather keratins, chromosomal karyotype and morphology adding.The contour feather vance, down feather and shaft of six Larks were studied by means of SDS-PAGE of feather keratins.

本文在羽毛角蛋白、染色体核型及形态学三个层次上，以羽毛角蛋白凝胶电泳分析为主，以染色体核型分析和形态学分析为参考，对分布于内蒙古地区的百灵科Alaudidae的6种百灵鸟的亲缘关系进行研究，包括云雀Alauda arvensis、蒙古百灵Melanocorypha mongolica、短趾百灵Calandrella cinerea、亚洲短趾百灵Calandrella cheleensis、角百灵Eremophila alpestris、凤头百灵Galerida cristata。

In Granards' reactionof fluorinated β-ketophosphonium salts we found differentGranard reagents give different reaction mechanisms andPhMgBr realized the enolate reaction of fluorinatedβ-keto-phosphonium salts.

在研究含氟β-酮基鏻盐的β位亲核加成反应中，我们利用含氟α-烷氧基-β-酮基鏻盐与有机锂试剂的亲核加成反应一锅法高度立体选择性地合成了E式或Z式三氟甲基的烯醚类化合物。

According to WBR theory and the character of homonuclear system,the relaxation equations of homonuclear system with RF irradiation are deduced by means of the three-dimensional Wigner rotation matrix.

根据WBR理论和同核体系的特点，构造出了一个相应的三维转动，利用Wigner旋转矩阵的特性并借助于计算机代数语言，计算出了射频场照射下同核体系完整的弛豫方程组。

Methods: Adopting electrophysiological methods, the extracellular discharge signals of neuronic action in NTS were recorded with glass microelectrode. The influence of the discharges of NTS neurons responding to the acupuncture at "Zusanli","Neiguan","Zhongwan","Qihai" point were observed in rats' normal status and the condition of intravenous injection Atropine.

采用神经电生理学方法，用微电极细胞外记录大鼠孤束核单个神经元的活动，在正常生理状态下及经血管注射抑制胃运动的药物阿托品后，观察针刺&足三里&、&内关&、&中脘&、&气海&对孤束核神经元放电的影响。

Methods Adopting electrophysiological methods,the extracellular discharge signals of neuronic action in NTS were recorded with glass microelectrodes. The effects of acupuncture at "Zusanli"(ST 36),"Neiguan"(PC 6),"Zhongwan"(CV 12),"Qihai"(CV 6) on discharges of NTS neurons and intra-gastric pressure were observed in the rat at normal physiological state,and increase or reduction of gastric motility.

采用神经电生理学方法，用微电极细胞外记录大鼠孤束核单个神经元的活动，观察在正常生理状态及胃运动增强和胃运动抑制的病理状态下，分别针刺&足三里&&内关&&中脘&&气海&对孤束核神经元放电及胃内压的影响。

The calculated NICS values show that nucleus-independent chemical shifts values of roof-shaped isomers for Sb42-, Bi42-, and22- species are all negative, consequently indicating that these roof-shaped isomers possess aromaticities. NICS values for the planar ring isomers are all positive, suggesting that these three planar ring isomers have antiaromatic characters.

计算显示Sb42-、Bi42-和22-团簇的所有屋顶型结构的核独立化学位移全部为负值，从而说明这些屋顶型结构拥有芳香性；平面环结构的核独立化学位移值全部为正值，说明这三种平面环结构具有反芳香性。

There are three stages in the formation process of illite fundamental particle:① the nucleation stage of 2-nm thick illite particle at the incipient process of montmorillonite illitization;② the simultaneous nucleation and growth stage and ③ the surface-controlled growth stage.

伊利石单元粒子的形成过程有三个阶段：蒙脱石伊利石化过程中2nm厚的伊利石粒子的成核作用阶段、成核作用与生长作用阶段和表面控制生长阶段。

China's nuclear energy application, like in many other countries, develops in "three steps"(i.e., from thermo neutron reactors to fast neutron breeding reactors and then to controlled fusion reactors).

中国的核能源的应用，在许多其他国家一样，发展的&三步走&（即从热中子反应堆快中子反应堆繁殖，然后再受控核聚变反应堆）。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。