primary characteristics 中文意思是什麼

primary characteristics 解釋
第一特徵, 第一性徵
  • primary : adj 1 第一的，最初的，初級的；初等的；基本的；基層的。2 主要的，為首的，第一位的。3 原始的，根本...
  • characteristics : 產品性能描述
  1. We have observed the following characteristics of anatomical structure and development : ( 1 ) the primary roots belong to archetype and the lateral roots occur in the position toward the xylem of the vascular cylinder ; ( 2 ) the root endodermis consists of thicken casparian strips, and there are from two lo four layers parenchyma cells near the pericycle ; ( 3 ) the pith and resins canals are absent in the toots ; ( 4 ) secondary structure occurs in the root hair zone, and vascular cambium is formed from the parenchyma cells between the primary xylem and primary phloem ; ( 5 ) tanning materials are abundant in pericycle cells and phelloderm cells ; ( 6 ) sclereids are found in secondary phloem, and rays are rather rich in secondary xylem

    結果表明：氣生不定根具有以下結構特徵和發育特點： （ 1 ）根為二原型，側根正對著木質部發生； （ 2 ）幼根內皮層細胞具凱氏帶加厚，維管柱內緊挨中柱鞘內側具有2 ~ 4層大型薄壁細胞； （ 2 ）根中無髓和樹脂道； （ 4 ）次生結構發生於根毛區，維管形成層由初生木質部和初生韌皮部之間的薄壁細胞轉化形成； （ 5 ）中柱鞘和栓內層細胞富含單寧類物質； （ 6 ）次生韌皮部有石細胞，次生木質部射線發達。
  2. In this paper, a strain was selected with high esterase activity. its characteristics of production and enzymology and separation of l - lactic acid were investigated. through primary screening and rescreening, a fungus, f - 16, with high esterase activity was selected

    本文選育出了高活性酯酶產生菌株並對該菌體的產酶性質、酶學特性及酶對乳酸乙酯的手性拆分后產物分離作了一定的研究。
  3. Developmental characteristics of primary school pupils ' figural reasoning strategy

    小學生圖形推理策略發展特點的研究
  4. Objective to evaluate the clinical characteristics, diagnosis and treament in patients with primary tumor of the mediastinum

    摘要目的探討縱隔腫瘤的臨床特點和診療方法。
  5. With the rapid development of the security stock market especially the stock market in chian ， issuing stock and circulating on market became the first choice of financing for more and more enterprise at the same time ， more and more investors are attracted by the relately high initial return of stock however ， the problem of ipos underpricing always exists in the stock market according to the data of more than one thousand chinese stocks ， most new issues had great raise in the first trade day ， and investors could acquire higher initial return than the average return of the stock market or the same industry we find that initial returns on a - share ipos average reached 132. 24 percent the main body of this paper is made up of six sections ： in the first part ， we introduced the method of the estimate of pricing decision ； in the second part ， we analyzed the method of the pricing decision and issuing system in china ， discussed the advantage and weakness of the various issuing methods ， and compared the economic efficiency between the examine and approve system and authorization system ； in the third part ， we analyzed the reason of ipo ' s underpricing in detail from information economics and other factors and combined with the environment of the chinese stock markets ， we analyzed the special characteristics in china and how they effect the ipo ' s underpricing in the fourth part ， we analyzed the data of chinese stock market with spss ， made a analysis of the administrative pricing decision and market pricing decision ， studied the underpricing phenomena of chinese stock market ， and analyzed it ' s causes ； in the fifth part ， we made a analysis of the examine approve system and authorization system ； and in the last part ， we drew some conclusions and put forth some policy advices the follow are the conclusions and policy advices in this dissertation ： （ 1 ） from the results of this empirical study ， we found that the issuing price - earning ratio and the market situation before ipos are strongly and positively associated with the underpricing of shares ， the issuing scale of ipo and the hit rate are strongly and negatively associated with the underpricing ； （ 2 ） we found that after the abolishing of ipo ' s p / e ratio and the using of authorization system ， there is no significant difference among the underpricing of shares ， but considered with the market entironment ， we think that the ipo ' s underpricing has been correspondingly reduced （ 3 ） to reduce difference between the primary market and the second market ， we suggested that we shall bring the " over - allotment option ( oao ) " to bear and resume the state - owned share and corporate - owned share to circulate on market as soon possible

    本文的主體由六個部分組成：第一部分介紹新股發行定價的估值方法；第二部分對我國的發行定價方式和發行制度進行分析，探討不同發行定價方式的優缺點，以及審批制和核準制經濟效率分析；第三部分從信息經濟學角度和其他因素的角度詳細分析造成新股發行抑價的原因，並結合我國股票市場實際情況，分析了我國市場的特有因素是否及如何影響一級市場的發行抑價程度的；第四部分利用統計分析軟體spss對我國新股行政化和市場化定價進行實證分析，主要包括新股發行行政化和市場化定價方式的實施情況和效果分析、新股發行行政化定價方式的實證分析，以及新股發行行政化和市場化定價方式的比較實證分析；第五部分利用統計分析軟體spss對我國新股發行審批制和核準制進行實證分析；第六部分是本論文的主要結論。本文的主要結論和建議有： （ 1 ）從實證分析結果看，我國新股發行抑價與市場環境、發行市盈率呈顯著正向關系，與發行規模、申購中簽率等呈顯著反向關系。 （ 2 ）取消發行市盈率限制和實施核準制等市場化改革措施並沒有降低發行抑價的絕對水平，只是由於市場環境的因素，發行抑價的相對水平才有所降低。
  6. Ultramafic rock fragments, which almost is altered to ophite, distributed in structural zone and displayed structural lens. so far, 9 fragments were discovered and mapped in nujinshan and bujing area ultramafic rock can be divided two kinds according to it ' s geochemical characteristics. one can be correlated with metaperidotite, which represented residual part that primary pyrolite underwent moderate partial melting, from some representative ophiolite melange in the world

    按超鎂鐵巖類的地球化學特徵可將其劃分為兩類：一類具有較高而穩定的mgo 、較低的al _ 2o _ 3 、極低的cao ， m f值為8 . 0 ? 8 . 4 ，按標準礦物組合進行分類可定為方輝橄欖巖，且均為fa _ （ 100 ） 、 en _ （ 100 ）的鎂質端元組分；可與世界上一些典型的蛇綠巖套中變質橄欖巖進行對比，代表了原始地幔中等部分熔融作用后殘余物。
  7. The expert system model is not only a universal expert system model, but also is used as a whole expert system. its primary function is using character compared method, compared with standard to help archaeologist to analyze age and name of the bronze according to characteristics selected, such as sculpt, pattern and posy

    本文實現的專家系統模型既是青銅器鑒定領域的一個通用專家系統模型，又可以作為一個完整的專家系統獨立使用，其主要功能是根據用戶選擇的青銅器形制、紋飾、銘文等特徵，採用特徵比較法，與同種類的標準器型比較，輔助考古工作者對青銅器做出斷代及名稱分析。
  8. In this work, the transmitting characteristics of transformer on various kinds of loads were investigated, and an oil - filled compact pulse transformer was designed. from experiments, the parameters with primary inductance 2. 578, h, secondary inductance 167. 710uh, and coupling coefficient 0. 7238 were obtained

    7238 、直徑20cm 、長50cm （外殼） 、耐壓300kv的緊湊型空心脈沖變壓器，並在此變壓器上進行了大量的實驗，得到了實驗與理論分析相一致的結果。
  9. In this work, some species of palmae cultivated in the xiamen botanical garden had been selected to be analyzed their genetic diversity with rapd ( random amplified polymorphic dna ) technique. according to the result of genomic dna amplified with pcr ( polymerase chain reaction ), genetic distance and similarity between different palm species were calculated on nei " s estimate of similarity and genetic distance. a primary but first time research at the phylogenetic relationships of some genera and species, the molecular classification and identification of some puzzling species of palmae was carried out through upgma ( unweighted pair group mean average ) cluster analysis of the genetic distance together with comparative study of the morphological structure characteristics

    本文在初步調查分析了棕櫚科植物在我國的自然分佈、引種馴化情況以及該類植物在廈門地區栽培應用狀況的基礎上，首次採用rapd分子標記技術，對廈門萬石植物園引種的一些棕櫚科植物的遺傳多樣性進行了研究，根據pcr對基因組dna擴增的結果，用nei ' s相似性系數計算了不同植物間的遺傳距離和遺傳一致度，通過對遺傳距離的upgma聚類分析，並結合形態分類的特點，對棕櫚科植物的屬、種間的系統分類關系和一些疑難種的分類鑒定進行了初步研究。
  10. Abstract : seven major methods and their reaction characteristics for the synthesis of primary vicinal diamines starting from epoxides, and alkenes etc. are given in detail

    文摘:詳細綜述了從環氧化合物、烯烴等為起始原料合成一系列一級鄰二胺的七條主要路線，並比較了各條反應路線的特點。
  11. Of the four inclinations in international trade in education, the domination of developed countries in market is apparently the most outstanding characteristics. consumption abroad has the fewest restrictions, while primary and secondary schools encounter comparatively remarkable obstructions in market permission. from its current division and characteristics, we can easily infer its inclination that embraces five points

    在現代國際教育貿易市場上，發達國家之間、發達國家與發展中國家之間為擁有教育貿易市場上的最大份額，展開了激烈的爭奪，形成了教育貿易市場上的割據狀態，表現在以跨境提供、境外消費、商業存在和自然人流動形態下的教育貿易發展狀況。
  12. Mainly by using the historically comparative experience method, and in view of chinese linguistics and certain relevant theories like bruners structuralism and modern cognitive theories, and yet on the basis of elaborating on discipline structure of teaching chinese literacy in the primary school and the characteristics of child ' s cognitive development, this thesis reflects upon the practice of teaching chinese literacy in china ' s primary school and emphasizes the importance of good resolutions of the following issues : the relation between chinese literacy teaching and chinese teaching system ; the stages of chinese literacy acquisition and the multiplicity of the approaches to such acquisition ; the issue of chinese phonetic alphabet as the instrument of chinese literacy acquisition or as its goal ; major device and auxiliary devices for the development of chinese literacy, etc. and finally by addressing the essential frameworks of the new curriculum standards, the ultimate aim of chinese literacy teaching as well as the striving direction for china ' s chinese teaching reform is defined as " teaching aims at self - teaching "

    在對我國小學語文識字教學歷史經驗進行回顧的基礎上，分析其中的合理性與局限性，找出問題的癥結所在，探索如何將漢字構字規律與學生的認知規律有機結合起來，提高識字教學水平，是本文的主要研究目的。本研究主要運用歷史經驗比較法，借鑒漢語言文字學、布魯納的結構主義和現代認知心理學的有關理論，在論述我國小學語文識字教學的學科結構和兒童的認知特點的基礎上，反思我國小學語文漢字教學的實踐，提出識字教學必須處理好幾對矛盾：識字教學與小學語文教學體系、識字的階段性與識字方法的多樣性、拼音是識字教學的手段還是目的、識字的主要方法與次要方法等，結合新課程標準的基本精神，提出「教是為了不教」是識字教學的最終目標，也是我國小學語文教學改革的努力方向。
  13. Based on investigation, psychological tests, documents, cause investigation and analysis, and mathematical statistics, this thesis made a systematic study on the contemporary characteristics of early 21st century excellent physical education teachers in chinese secondary school, and on the talent - making factors, with 153 secondary schools from the " cross - century gardening engineering " training class composed of the key primary and secondary physical educational teachers of national level as the objects of study

    採用調查法、心理測試法、文獻法、個案分析法以及數理統計法，以「跨世紀? ?園丁工程」國家級中小學體育骨幹教師培訓班中的153名中學教師為研究對象，對21世紀初我國優秀中學體育教師的時代特徵與成才因素進行了較系統的研究。
  14. The thesis retrospects some primary management theories and ideas of reference value, and definition of complex system is introduced ; also the conception, theoretical foundation and method of cas are reviewed ; and description of adaptive agents, the seven basic points and main characteristics of cas are systematically introduced

    回顧了對本研究有借鑒價值的主要管理理論、管理思想，並介紹了復雜系統理論的定義，系統地回顧了cas的概念、理論基礎和方法，並概括了cas理論的7個基本點和主要特點，把適應性分子進化模型及其相關理論引入到了復雜適應系統。
  15. It is also shown that the primary characteristics exhibited by the cavity polaritons are different from varied radii

    隨著微腔半徑的變化，極化激元的三支所體現的模式的特性是變化的。
  16. Then, the architecture of eerp, which is a hierarchical structure and is oriented to web service, is provided and the primary characteristics are explored

    在此基礎上，給出了面向web服務的eerp層次化體系結構，並詳細論述了該體系結構的主要特徵。
  17. The current model of morce has the primary characteristics of tackling accidents afterwards

    這是一個以事後應急處理為基本特徵的保留管理模式。
  18. This thesis is organized as follow : in chapter 1, we introduce the development history of monitoring system and its primary characteristics

    全文內容將組織如下：第一章，概述監控技術和監控場景視頻特點。
  19. Traditionally autologous chondrocytes implantation is applied at the damage site, which has many problems such as the losing of its primary characteristics

    胚胎幹細胞具有自我更新和多分化潛能的特性，在一定培養條件下經適當刺激可誘導分化成軟骨組織。
  20. In chapter 1, we describe the basic concepts and primary characteristics of virtual reality system and point out that fractal modeling is a kind of promising key technology

    本文第一章簡單介紹了虛擬現實的基本概念、重要特點以及虛擬現實系統的分類和應用領域，指出了分形建模是一種有前途的關鍵技術。
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