轉換型突變 的英文怎麼說

中文拼音 [zhuǎnhuànxíngtūbiàn]
轉換型突變 英文
transition mutation
  • 轉 : 轉構詞成分。
  • 換 : 動詞1. （給人東西同時從他那裡取得別的東西） exchange; barter; trade 2. （變換; 更換） change 3. （兌換） exchange; cash
  • 突 : Ⅰ動詞1 （猛沖） dash forward; shoot out 2 （高於周圍） protrude; bulgeⅡ副詞（突然） abruptly; sud...
  • 轉換 : change; transform; convert; switch
  • 突變 : 1 （突然急劇的變化） sudden change; change suddenly; transilience; accident; saltation; revulsion...
  1. Taking mount south tianmu as an example, it was found that the following measures of planning mountainous non - optimal tourism district could be adopted : using the tourism resources in a different and better way ; making full use of the tourism resources outside the scenic spot ; cooperating with the scenic spots nearby to attract more tourists ; improving the value of the tourism resources by shifting sightseeing scenes ; expanding and intensifying the characteristics of the scenic spot to make it more recognizable ; constructing tourism facilities to enrich the tourism resources ; designing landscape sight with the methods of landscape ecology to make it more unique

    摘要以浙江省臨安市南天目山為例，總結出山地型旅遊資源非優區的規劃方法：通過轉變資源利用方向，以扭轉資源劣勢；通過借用旅遊區區外景觀資源，豐富可利用的景觀資源；與區外旅遊區的聯動開發，以增強旅遊吸引力；通過觀賞場景轉換，以提升普通景觀旅遊資源的景觀價值；將旅遊區小的特色加以擴展與強化，以突顯易被認知的特徵；將某些旅遊設施進行旅遊項目的開發，以增強特色；運用景觀生態學原理，將大地景觀化平常為獨特等。
  2. Firstly, this paper introduces the asynchronous motor model, and compares it with the dc motor ’ s. then the paper studies the principle of vector control, and proposes an improved current model of rotor flux observer. this paper also studies the three - level inverter ’ s topology, working principle, the neutral - potential unbalance mechanism and its controlling strategy. the paper especially studies the svpwm in details. the interface between the vector control and the three - level inverter is studied in details, including the generation of reference voltage vector, its judging of the sector and triangular regions, and the working mechanism after it sent into three - level inverter. when synthesizing the reference voltage vector, select the vector which only includes p and o states as the starting vector, thus eliminate the vector shift problem when sector changes. this paper fully takes advantages of the powerful functions of matlab / simulink to set up the simulation model. this construction is very explicit. the simulation results verify the inverter voltage output is correct, the rotor flux is steady, the asynchronous motor ’ s dynamic and steady state performances and speed modulation are excellent

    本文首先介紹了異步電機的數學模型，在此基礎上將異步電機的數學模型與直流電機的數學模型進行了比較;然後介紹了矢量控制的基本原理，採用了一種改進的轉子磁鏈電流型觀測模型;對三電平逆變器的電路拓撲、工作原理、中點電位不平衡的機理及控制方法進行了介紹，詳細分析了空間矢量脈寬調制策略。本文對異步電機的矢量控制與三電平逆變器之間的介面進行了詳細的研究，包括:參考電壓矢量的形成、所落扇區與具體小三角形區域的判斷、送入逆變器之後的工作機理。在參考電壓矢量的合成時，選擇只包含p 、 o狀態的空間電壓矢量作為起始矢量，解決了扇區切換時的矢量突變問題。
  3. The results showed : ( 1 ) in the d - loop of mtdna genome from 18 individuals, there were only transition and transversion, were not insertion and deletion, and the frequency of transition was higher than transversion ; ( 2 ) and nucleotide diversity was 0. 0011, the sequence divergence values among haplotypes was 0. 005

    研究結果顯示： （ 1 ） 18隻大鴇的301bp - 330bpmtdna控制區序列的突變只有轉換和顛換，無插入和缺失，且轉換的頻率高於顛換； （ 2 ）核苷酸多態性只有0 . 0011 ，不同單元型間的序列差異值為0 . 5 。
  4. The development of sedimentary environment of yanchang formation be analyzed and discussed further. based on the analyses of all kinds of sedimentary deposit. under the direction of the theory and methods of sequence stratigraphy, 4 type i sequence boundary could be recognized in the study area, according to the marked bed including plane of deflation, scour, the plane of lithological salutation, structural transformation, down cutting channel sheet sand and so on. type i sequence consists of low stand systems tract, transgressive systems tract and high stand systems tract

    本文採用當代層序地層學理論和方法，利用風化剝蝕、沖刷面、巖性巖相突變、結構轉換面、構造機制轉換面等層序界面的識別標志，將研究區延長組劃分為四個層序，其層序界面都為型層序界面，具有三元體系域結構特徵，由低水位體系域、水進體系域和高水位體系域三個部分組成。
  5. Finally the paper analyses and measures the miracle of chinese economic growth to make the conclusion : during the more twenty years since the opening and reform, the economic growth of china has evidently demonstrated the character of leapfrogging - oriented growth. on the economic growth of china, the component of capital deepening has basic effect, and the component of efficiency enhancement has evident effect, however, the component of technology innovation has little effect. such growth pattern accommodates present economic development stage of china, and with the transition of the stage, growth dynamic must transform correspondly

    論文最後對中國自身的「增長奇跡」進行了解讀和測度，得出基本判斷為:改革開放以來20多年的中國經濟增長已明顯呈現出了蛙跳型增長的特徵，為一世界經濟發展史增添了持續快速增長的「中國故事」 ;中國的經濟增長中資本深化起了基礎性的作用，技術效率提高的因素也十分明顯，而技術創新的作用還不是十分突出，這種增長格局與我國現今的經濟發展階段是相適應的，但隨著我國經濟發展階段的轉換，增長動力也必須相應的變換。
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