首次 的英文怎麼說

中文拼音 [shǒucì]
首次 英文
for the first time; first
  • 首 : Ⅰ名詞1 （頭） head 2 （首領） leader; head; chief 3 （表示方位） aspect 4 （姓氏） a surname Ⅱ動...
  • 次 : Ⅰ名詞1 （次序; 等第） order; sequence 2 [書面語] （出外遠行時停留的處所） stopping place on a jou...
  1. In this paper, the concept of acceleration ambiguity function ( aaf ) and acceleration resolution is put forward for the first time. using aaf, the effects of target ' s relative acceleration on several outputs of a linear - phase matched filter are analyzed, such as the output signal - noise - ratio loss, the doppler resolution, the constraint on optimal accumulative time ( opt ) and their tolerable limits

    論文首次提出並研究了加速度模糊函數和加速度分辨力的有關概念，並以加速度模糊函數為分析工具，詳細討論了加速度對線性相位匹配濾波器的輸出信噪比的損失程度、對多卜勒頻率分辨能力的影響程度、對最優相參積累時間的約束關系以及線性相位匹配濾波器輸出受加速度影響的容限等問題。
  2. The russian language production will be the first time abba songs will be performed in russian

    俄語版的製作是abba的歌曲首次被翻成俄文。
  3. And the deficiencies are pointed out in present researches, such as highway capacity, level - of - service, influence factor of road alignments, etc. from these, it has confirmed that the thesis should be studied from rational analysis, quantitative analysis of level - of - service, impact on capacity of road alignments, setting - up simulation model, etc. the high - accuracy gps dynamic data acquisition appearance is proposed to be used for the first time to carry on the experiment of overtaking on two - lane highways, and experiment scheme is designed according to the driver ' s perceive to judge each overtaking course. based on the experiment data, it can get two important parameters of acceptant gap ? the critical gap of overtakable time headway and returnable time headway through data processing, which can offer the strong support to the research of two - lane highway capacity with qualitative and quantitative analysis. besides, the experiment methods is provided to observe overtaking ratio and to measure the

    研究中首次提出了運用高精度gps動態數據採集儀對雙車道公路上的超車行為進行觀測，設計了根據駕駛員感受度來衡量超車過程的實驗方案，並通過後期數據處理得到了超車過程中兩個重要的可接受間隙參數-可超車車頭時距和可回車車頭時距的臨界間隙值，為定性和定量分析雙車道公路通行能力提供有力的數據支持;同時，還提出了觀測超車率的實驗方法以及測量加速度干擾的實驗方案，統一了計算加速度干擾的時間統計間隔，為雙車道公路的服務水平量化研究奠定基礎;最後還簡單介紹了駕駛員問卷調查法和模擬程序中模型參數標定和驗證的數據採集方法。
  4. Manchester united have agreed a provisional date for a testimonial that will bring roy keane into contact with sir alex ferguson for the first time since their acrimonious fallout

    曼聯和羅伊.基恩初步確定了紀念賽的日期，這將是他們關系破裂后的首次聯系。
  5. On the base of serious summarizing the experience of more than 20 pilot villages of the all city during the past 7 years, twice villages surveys in large scale in 1999 and 2001 ( including over 200 villages ) and thirteen pilot villages in the project of rural development by technology and education project in beijing in 2002, generalizing experience on how to develop village economy and rural development by technology and education project entirely, extrapolating the operating mechanism, management system and village development pattern in how to rely on technology to train rural elites and boom village economy especially. thereby, representing the conception, goal and operating clue of village economy and rural development by technology and education project for 21st century in beijing in detail. it is the first time to represent four operating thesis of rural development by technology and education project for 21st century in china systematically : system thesis of village productive forces ( inside ) ; regional actinoid thesis in village ( outside ), operating thesis for origin, bank and fluid, and the thesis of biology balancing and limited factors

    在認真總結北京市7年多來全市20餘個科教興村老試點和1999年、 2001年兩次大規模村級調查（ 200餘村） 、北京市2002年十三個科教興村新的試點的基礎上，全面總結如何依靠科技、教育在發展村域經濟、開展科教興村等方面的經驗教訓，特別是重點總結歸納了7年來北京市如何依靠科技、培育鄉土人才、促進村域經濟發展的科教興村的管理體系、運作模式、村級發展模式；在此基礎上，詳細闡述了21世紀北京市科教興村的概念、目標和工作思路；並在國內首次較系統地、深入地闡述了21世紀科教興村的四大運行理論基礎：村域生產力系統理論（對內） 、村域區域經濟發展輻射理論（對外） 、 「源、庫、流」運轉學說和「生態平衡理論和限制因子學說」 。
  6. The characteristics of the sub - leaf epidemics of the plants have been observed and compared by scanning electronic microscope. lt was found out that the micro characteristics are important in a sense for identification the varieties. the constituents of volatile oil from dry flower buds of l hypoglauca miq., l acuminate wall, and l similis hemsl

    首次通過gc - ms聯用技術分析了紅腺忍冬、淡紅忍冬和峨眉忍冬乾燥花蕾揮發油成分，並通過計算機質譜庫檢索並與標準圖譜對照，對其所含化合物進行了鑒定，發現棕櫚酸是它們的主要成分，相對含量最高佔49 . 27 ，最低佔28 . 71 ，其餘成分的組成和含量差別較大。
  7. A method to calculate quantitatively the adsorption volume or adsorption space of per mass of adsorbent derived from both the adsorbed molecule volume and the maximum adsorbance of a solute in an adsorption isotherm under a given experimential condition is presented firstly for a solid / liquid adsorption system of the solute in a dilute aqueous solution. this method is suitable for not only mono - layer adsorption, but also mani - layer adsorption and micelle adsorpion of surfactant constructed by hydrophile and lipophile groups. therefore, the surface concentration of the adsorbate, cs, deduced from the adsorption volume is possessed of the meaning of true concentration, and the value of the patition coefficient of the adsorbate between solid and liquid phass, p, attained by the cs and the c, solution concentration of the adsorbate, can be accurate. the foregoing a set of calculations are presented for the solid - liquid adsorption systems consisted of the wool fiber and separately dodecyltrimethyl - ammonium bromide ( dtab ) and hexadecyltrimethyl - ammonium bromide ( ctab ) in this paper. this provides a strong basis for adsorption thermodynamic investigation of adsorbate

    對稀溶液中溶質的固/液吸附體系，首次提出了根據吸附分子體積和實驗條件下吸附等溫線中的最大吸附量計算單位質量吸附劑的吸附體積或吸附空間的方法.此法適用於單層吸附，也適用於多層吸附和具有親水親油結構的表面活性劑分子的膠團吸附.由此，吸附質的表面相濃度cs具有真實濃度的含義，相應地，計算得到的溶質的固/液分配系數p就有了準確值.分別計算由溴代十二烷基三甲銨（ dtab ）和溴代十六烷基三甲銨（ ctab ）與羊毛纖維構成的液/固體系分配系數等，為溶質吸附的熱力學研究奠定了基礎
  8. In recent times, it has become customary to invite units from france ' s close allies into the parade ; for instance, in 2004 during the centenary of the entente cordiale, british troops ( the band of the royal marines, the household cavalry mounted regiment, grenadier guards and king ' s troop, royal horse artillery ) led the bastille day parade in paris for the first time, with the red arrows ( the royal air force ' s aerobatic display team ) flying overhead

    最近，邀請法國的親密盟國派部參加閱兵成為了一種慣例；如，在2004年紀念《友好協議》簽署百周年的慶典上，英國部隊（皇家海軍陸戰隊樂隊、近衛騎兵團、擲彈兵衛隊以及皇家騎兵炮隊中的禁衛軍部隊）就首次走在了巴黎「巴士底日」閱兵隊伍的前列，其中「紅箭」 （皇家空軍特技飛行表演隊）還貫空而過。
  9. By means of discontinuous tris - hcl buffer system and poly aery 1 amide gel electrophoresis ( page ), zymogram of 23 species of 11 genera in 4 subfamilies mirinae, orthotylinae, phylinae and deraeocorinae are gained. by specific primer pcr and sequencing, 57 cyt b gene 433bp sequences are obtained from 34 species respectively belonging to 17 genera in 5 subfamilies mirinae, orthotylinae, phylinae, deraeocorinae, bryocorinae from 64 species of 23 genera which involved in this research, and 2 outgroup species of family anthocoridae as well. 1

    首次通過特異引物擴增和基因測序的研究方法從被試的5亞科23個屬的64種盲蝽中獲得了盲蝽亞科、合墊盲蝽亞科、葉盲蝽亞科、赤爪盲蝽亞科和蕨盲蝽亞科bryocorinae5個亞科17個屬的34種盲蝽以及外群花蝽科anthocoridae2種花蝽的cytb基因序列57條。
  10. First installation in canada ( edmonton, alta. ). invention of small dial and two - wire system eliminating ground at subscriber ' s station

    電話系統首次在加拿大（阿爾塔省埃德蒙頓）安裝。發明小型撥號盤和二線系統，並取消用戶端的地線。
  11. In this paper, the karyotype and banding pattern of amphioxus b. belcheri tsingtauense were reported for the first time

    本文首次報道了青島文昌魚染色體的核型和帶型。
  12. Since the middle of 20th century chinese scientists have put considerable effort and resources into the search for new antimalarial compounds extracted from chinese traditional herbs. an antimalarial drug was finally isolated in 1971 and named artemisinin or qinghaosu. its rapid action, low toxicity and powerful effect against falciparum malaria made it a favored subject for research

    青蒿素是一種含過氧基團組成縮酮的新倍半萜內酯，我國科學工作者於二十世紀70年代首次從中藥青蒿即菊科植物黃花蒿（ artemisiaannua ）中分離出青蒿素。
  13. The process of vessel element ' s promotion, formation and connection in primary xylem of antirrhinum majus, a model plant, was observed through micropolariscope and bright - field microscope

    利用偏光顯微鏡和明場顯微鏡，首次報道了模式植物金魚草幼苗初生維管系統木質部導管分子的發育、形成和連接過程。
  14. This has been the first time that the zhuhai municipal agricultural science center has worked on aquiculture on such a large scale and it is mainly for the promotion of growth technologies

    這也是主要以種植業技術推廣為主的市農科中心首次大規模涉足水產養殖。
  15. Focused on archaean fractured reservoir of metamorphic rock in the damintun depression of liaohe basin, by the newly studied methods, the author predicts fractures in buried hills by drilling, coring, well logging and seismic data intergrately

    本文以遼河盆地大民屯凹陷太古界變質巖裂縫性儲層為研究對象，從技術研究的角度出發，首次探索了利用鉆井取芯、測井和地震資料綜合預測潛山裂縫發育的方法。
  16. This paper mainly discusses about the acceleration response of the artillery that is caused by the plainness causes under traveling condition. and according to the system aspect of the matching between the tractor and artillery which composes the artillery train, it also presents the characteristics of the steering, braking stability and manipulating stability which affects the artillery moving maneuverability

    本文在火炮設計領域首次對火炮牽引列車系統進行動力學分析，重點研究了火炮牽引行駛狀態下的路面不平度對火炮的加速度響應，並從牽引車與火炮匹配組成火炮列車的系統角度，研究了影響火炮行駛機動性的轉彎特性、制動穩定性和操縱穩定性。
  17. Aspartame first came on the market 25 years ago

    阿斯巴甜於25年前被首次推向市場。
  18. For the first time a feeling of uneasy doubt assailed him.

    一種不自在的疑慮感首次向他襲來。
  19. The highlands natural beauty attracts many spiritually minded people who are sincere and live a simple life. on february 6, 2005 the initiates held the areas first seminar featuring masters videos in the atherton neighbourhood centre

    2005年2月6日，兩位落居此地的同修，在亞瑟登atherton社區中心舉辦了當地首次的弘法講座，結果非常成功。
  20. Hong kong, china was on july 9 elected vice - chair of the world customs organisation for the first time, with responsibilities covering the far east, south and southeast asia, australasia and the pacific islands

    中國香港在七月九日首次獲選為世界海關組織的副主席，負責遠東南亞及東南亞澳大拉西亞和太平洋島嶼的事務。
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