系统发育

We systematically studied somatic and zygotic embryogenesis and its cytological process. This is the first report on these subjects till now.

本文首次对水曲柳的体细胞胚胎诱导和合子胚与体细胞胚发育的细胞学过程作了系统研究。

The rate of morulae/blastocysts was (59.5±3.2)%(P.05). In conclusion, the sequence culture system (SOF and granulosa cell+NCSU-23 FCS and POEC) can improve the development of procine parthenogenetic embryos.

结果表明，SOF培养基和颗粒细胞＋添加胎牛血清的NCSU-23和输卵管上皮细胞的序贯培养系统能较好的促进胚胎的发育。

Advertisement competition decision making analysis for double oligarchies monopolization market;2. By using the current microeconomic theories and analyzing methods, the paper approached the causes of monopolization in natural gas industry, and also analyzed the market structure and pricing system under the conditions of monopolization .

围绕我国天然气工业发展初期的市场发育不全、定价机制不能反映供需要求和价格扭曲等问题，运用现代微观经济理论和分析方法，系统地探讨了天然气工业形成垄断的原因，并对垄断环境下的天然气市场特征及价格机制进行研究。

Were systematically investigated. Epi overproduced ethylene during vegetative growth and fruit development Table 1 and Fig.

突变体Epinastics及其野生亲本VFN幼苗、成长植株和菓实生长发育与成熟特性进行了系统研究和比较分析。

Methods Ninety-one coronal CT scans of chronic sinusitis were analysed with mutimedia software developed by the authors. Sinus CT images were scanned into multimedia computer and the subtle anatomic structures such as pneumatization of the middle turbinate, agger nasi cell, Haller's cell, septal deformity , maxillary sinus hypoplasia , abnormality of uncinate process and ethmoid bulla and so on were measured.

用自行开发的计算机图像分析系统定量分析91例慢性鼻窦炎患者的冠状位鼻窦CT，观测指标包括：骨性解剖结构变异(包括中鼻甲气化、反常曲线中鼻甲、Haller气房、鼻中隔偏曲、上颌窦发育不良、鼻丘气房、钩突气化)、筛漏斗、钩突角度、筛泡等，测量相应结构的冠状位截面积、角度、长度。

Fine calibration for horizon, bed plane analysis techniques,seismic coherence data analysis,high resolution impedance inve...

在应用解释系统中放大地震剖面、时间切片、椅式切片和三维可视化等常规解释功能的基础上，结合精细层位标定、层面解释分析技术、地震相干数据分析技术和高分辨率波阻抗反演等多种技术开展小断层的研究，避免了 1m～ 2 m薄储层断失；应用地质统计学方法进行动态时深转换，提高密集井网区构造解释精度；进行全三维的层面和断面成图，指导复杂条件的井位调整；总结出构造发育特征与储层有效厚度分布的关系。

Sex determination is a choice between two development paths which provide a cascade about studying gene control pattern.

性别决定是在两种不同发育途径之间的选择，它提供了一个研究基因调控的模式系统。

By this the system, bovine preantral follicles in different diameters were cultured in vitro;and the effects of the number of follicles in each well of culture plate, different concentrations of NGF, Vitamin E, and Vitamin C on in vitro development of preantral follicles were studied.

在96孔培养板中，每孔25μl培养液的条件下，利用此系统研究了卵泡的入培直径、共培养卵泡数及神经生长因子、维生素C和维生素E对腔前卵泡体外发育的影响。

Rabbit zygotes were cultured in sequence culture system that contains: R1 culture medium which is with low concentration of glucose (1.0 mmol/L) and then R2 culture medium which is with high concentration of glucose (3.5 mmol/L).

试验采用含低浓度葡萄糖(1.0mmol/L)的R1培养液和含高浓度葡萄糖(3.5mmol/L)的R2培养液对兔原核期受精卵进行了体外序贯培养，并与传统的RID单一培养进行比较，研究了兔早期胚胎在体外序贯培养系统中的发育效果。

Evolutionary radiation of the biotas accompanied with a series of geological events, such as lithospheric thinning, magmatic activities, metamorphic core complex and extensional basins, which suggests a mechanism of interaction and response in the Earth surface systems.

它们的快速演变过程和华北克拉通上同时期发育的岩石圈减薄、大面积强烈岩浆活动、变质核杂岩及伴随的伸展盆地等地球表层重大地质事件并行发生，表现着地壳表层系统圈层间的相互作用和响应。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。