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Terms phenological changes in our country, a sign of seasonal order, and the festival includes a certain amount of customs activities and a commemorative significance.

节气是我国物候变化、时令顺序的标志，而节日则包含着一定的风俗活动和某种纪念意义。

Objective: To study the phenotypic properties of cells in human mature placental tissue and explore its significance.

目的：研究足月分娩胎盘组织细胞的表型特征并探讨其意义。

Objective To investigate the expression and significance of Ki67,cytotoxic proteinsTIAI,GranzymeB in nasal lymphoma.Methods Paraffin-embedded tissues of34cases of nasal NK/T-cell lymˉphoma,8midline B-cell lymphomawere studied using immunohistochemical method.

目的 探讨核抗原Ki67和细胞毒蛋白TIAI、GranzymeB在鼻腔淋巴瘤的表达及意义方法以NK/T淋巴瘤34例石蜡组织标本研究对象，同部位B细胞淋巴瘤8例为对照，行免疫组织化学染色。

First, based on the research of vocality art and vocalization, I discuss how to set up reasonable aesthetics concept on tenor"s voice, then expatiate on the characteristics,of the tenor"s voice in bel canto and the theoretic significance of setting up reasonable sound aesthetics concept. This essay is mainly on the way and key point of constructing tenor" s voice, especially solving the core problem of alt skill. The essay argues that the construction of tenor" s voice is based on the mediant and undertone sections; finding the phonate source, practice step by step, surrounding the point , string and side of the voice; train the students using suitable vowels according to the students with different characteristics ; emphasizing that ten essential words are the golden key to solution of the core problem in the "closing " method.

首先从研究声乐艺术和发声方法的指导思想和出发点着手，探讨了如何建立科学的男高音声音审美观；进而阐述了美声唱法中男高音的声音特点及建立科学审美观的理论指导意义；本文着重提出了构建男高音声音的方法与要领(特别是解决高音技术这一核心问题)，本文认为男高音声音构建先以中、低声区为基础，从找发声点开始，围绕声音的点、线、面逐一训练，同时根据不同特点的学生选择合适的母音进行训练，强调了&关闭&唱法中十字要领是解决核心难点的金钥匙。

So it is of much significance to study the mechanisms of ovule development and abortion of Chi- nese pine. By combining two-dimensional gel electro- phoresis (2-DE) and mass spectrometry analysis, the pat- terns of gene expression in a specific tissue at a specific stage can be displayed and characterized.

双向电泳和质谱技术结合研究基因表达的蛋白质组技术正越来越广泛地应用到植物研究中，我们将该技术应用到油松胚珠发育的研究中，比较了两种蛋白质提取的方法，发现蔗糖提取方法比传统的TCA 方法更适合于油松蛋白质的制备。

For the process of synthesizing of Phosphonic Acid Dimethyl, the significance of application of MSPC on it is discussed, the parameters and original data are deduced and estimated, and process monitoring and diagnostic simulation are given based on simplified model.

对于亚磷酸二甲酯生产过程，论述了对其进行多变量统计过程控制的意义，对该生产过程的物性参数和初始数据进行了推导和估计，并在经过简化的生产控制模型基础上进行了多变量统计过程监控和诊断仿真。

In fact, it is of great significance to in-depth understand the relationship between condensed state structure and photophysical properties, which can provide more insights into the design of novel optoelectronic polymers as well as the fabrication of high performance devices.

因此，本论文设计合成了一系列含芴苯结构的发光聚合物，同时通过各种表征手段详细研究了所制备的系列聚合物分子设计-聚集态结构-光电等物理性能之间的关系，并得到了一些非常有意义的研究结果。

The Gadamer"s Phronesis redefined the significant theory viewpoint "practice is the foundation and condition of a society rationality and its significance.

第三章论述了伽达默尔实践哲学的思想内涵。

Phyllanthus emblica is a wild resource of great economic significance in China.

余甘子是我国的一种重要野生经济资源。

The study of the biological characteristics of resistant phytopathogenic fungi has great theoretic and practical significance for improving the strategy of chemical pesticide application, postponing the occurrence of the resistance and advancing the chemical prevention and control of diseases caused by phytopathogenic fungi.

研究植物病原真菌抗药菌的生物学特征以及它们的抗药机制对于改进化学农药使用策略，延缓抗药性的产生，推进植物病害的化学防治，具有十分重要的理论和实践意义。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。