輪作周期 的英文怎麼說

中文拼音 [lúnzuòzhōuqī]
輪作周期 英文
period of crop-rotation
  • 輪 : Ⅰ名1 （輪子） wheel 2 （像輪子的東西） wheel like object; ring; disc 3 （輪船） steamer; steamboa...
  • 周 : Ⅰ名詞1 （圈子; 周圍） circumference; periphery; circuit 2 （星期） week 3 [電學] （周波的簡稱） c...
  • 期 : 期名詞[書面語]1. （一周年） a full year; anniversary 2. （一整月） a full month
  1. Okct - horal is well - known not only in usti nad orlici with rental, operating and furniture as well as with development, cycle and camping, but also with further offers, like manufacture, consultancy and / or installation, marking and boat

    作為一家嚴謹的工業型企業， okct - horal為您提供高效能、高度現代化的產品，例如野營、露營，周期、循環、一段時間，發展，調節對象，輪胎成型、服裝批量生產，機械出租，操作。
  2. The matrix of time and space for development of hydrogen energy system in china will instruct this work comprehensively, scientifically and objectively ; for beijing case and from all the aspects of energy, environment and economy, the best plan of hydrogen energy system about fuel cell vehicles is : hydrogen is produced by natural gas steam reforming in the central factory, then transported to the refueling stations in the hydrogen tube trailer by the trucks, and filled to the fcb using hydrogen gas

    這一工作應在燃料電池汽車氫能系統發展時空矩陣的指導下有計劃、有步驟地完成；燃料電池汽車在我國最早實現商業化的時間是2008年（奧運會） ，地點是北京，車型是燃料電池公共汽車。針對這一案例，綜合考慮燃料電池汽車氫能系統「從井口到車輪」全生命周期的能源利用效率、環境影響和經濟性指標，最佳的方案是：在集中制氫廠採用天然氣蒸汽重整制氫，用汽車將裝有氫氣的高壓氣瓶輸運到氫氣加註站，加註給以氫氣為燃料的燃料電池公共汽車。
  3. Because of middle or late hybrid maize joining the rotation, a prolonged rotation circle requires more accumulative temperature around 5000 - 5200 degrees

    由於將中、晚熟雜交玉米引入輪作，需要延長輪作周期以滿足更多的積溫，大約5000 ~ 5200 。
  4. It has to be noted, that the researches given in this dissertation may not be mature. yet, based on the intentions to improve the technical application of mers and on the philosophy of renovati

    值得指出的是，本文的研究探討也許不完全成熟，但本著改進輪機模擬器技術應用和力圖創新的思想，通過研究對擴大輪機模擬器培訓規模、縮短培訓周期、增強運行穩定性、提高培訓d效果可能起到一定的推動作用。
  5. So we can complete the kinematic analysis of the cam mechanism by the analysis of the corresponding assur - group. based on the method, this paper deals with plannar disc - cam mechanisms with different types of followers. the main points of this paper are as follows

    基於桿組的分析方法，本文圍繞各種類型從動件的平面盤形凸輪機構做了如下工作： 1 .根據凸輪機構的檢測數據利用三次周期樣條函數插值法對凸輪實際廓線進行曲線擬合。
  6. A group of calculated results is obtained when the train goes ahead a distance steps. thus, the results in a period are obtained. in addition, the local stress analysis and the shape optimization of locking hooks are done

    對于每種載荷情況計算都按照準靜態問題進行分析，不考慮結構的加速度，只考慮載荷作用點（火車車輪）的變化，列車每前進一段距離計算一個受力工況，得到一組數據，得到了一個周期的計算結果。
  7. Every year, rotary and rotaract clubs mark world rotaract week - the week of 13 march. rotaract ' s 35th anniversary in 2003 provides a good opportunity to celebrate and strengthen this partnership in service

    每年，扶輪與扶輪青年服務團都要紀念世界扶輪青年服務團周3月13日所在的一星期。 2003年的扶青團35周年紀念乃是慶祝與強化這種服務合作關系的大好時機。
  8. The main contributions are as following : the dynamic modeling, the solution of the linear and nonlinear differential equations, the dynamic response of the system, and so on. on account of the influence of the model of the high - speed cam - follower system on the dynamic character, the two modelings, the modeling with consideration of the clearance between the cam and the follower and the modeling without consideration of the clearance, were been addressed firstly

    本課題主要對高速凸輪機構的周期時變系統的動力學問題進行了相關研究，具體在高速凸輪機構作為周期時變系統的動力學建模、凸輪系統的周期時變模型的線性和非線性的微分方程的求解方法探索和凸輪系統的動態特性分析等方面做了一些工作。
  9. The rule ansi / asme ptc6 is the most accurate and popular used rule for steam turbine thermal performance test. it is difficult to use a standard calculation method to analyze the economic performance of different steam turbine thermal system, so the process of a steam turbine thermal performance test is too long, and many peoples are needed

    由於汽輪機熱力系統的多樣性，性能試驗需要採集的參數以及性能計算的過程也不一樣，對于性能計算工作，目前各個測試單位仍然以手工計算為主，使得整個性能試驗的周期很長，並且計算結果和計算人員的分析有關，評價精度難以保證。
  10. A new aerodynamic design system developed by authors for draft fan with enhanced efficiency, suppressed noise, enlarged flux and high load. the new design system features : a twist regulation for vortex control is employed in designing to lessen the secondary flow loss in the blade tip and hub ; the feasibility and high efficiency of this procedure has been verified by the tests of the prototype fan ; a new computer - aided 3d blading is used to optimize the blade ; numerical inverse checking is adopted to enhance accuracy in designing and cut down the period of the designing and production. this design system can make the optimized blade with " forward inclination ", " inclining sweep ", " bending sweep ", to minimize the various secondary flow losses, to expand the steady working range of the fan, and to suppress the aerodynamic noise source

    本文通過對一種新型高性能礦用局部通風機的設計、製造及試驗全過程的綜述，展現了新的先進設計體系在民用通風機上的成功運用，其研製特點是： （ 1 ）在葉片氣動設計中為了降低葉根及葉尖區二次流損失，採用可控渦扭向規律設計，樣機實測的高性能驗證了這種方法的可行性和高效性； （ 2 ）在設計方法中採用較精確的數值反驗算，獲取最優設計方案，大大提高設計的準確性和成功率，並縮短了設計試制周期； （ 3 ）在設計過程中發展了計算機輔助三維葉片造型新方法，可以根據設計需要簡便快捷地對葉片進行「前傾」 、 「傾掠」或「彎掠」造型，這些造型對減小各種二次流損失、擴大穩定工況范圍和控制葉輪機氣動噪聲源起到了非常好的作用。
  11. Abstract : a new aerodynamic design system developed by authors for draft fan with enhanced efficiency, suppressed noise, enlarged flux and high load. the new design system features : a twist regulation for vortex control is employed in designing to lessen the secondary flow loss in the blade tip and hub ; the feasibility and high efficiency of this procedure has been verified by the tests of the prototype fan ; a new computer - aided 3d blading is used to optimize the blade ; numerical inverse checking is adopted to enhance accuracy in designing and cut down the period of the designing and production. this design system can make the optimized blade with " forward inclination ", " inclining sweep ", " bending sweep ", to minimize the various secondary flow losses, to expand the steady working range of the fan, and to suppress the aerodynamic noise source

    文摘:本文通過對一種新型高性能礦用局部通風機的設計、製造及試驗全過程的綜述，展現了新的先進設計體系在民用通風機上的成功運用，其研製特點是： （ 1 ）在葉片氣動設計中為了降低葉根及葉尖區二次流損失，採用可控渦扭向規律設計，樣機實測的高性能驗證了這種方法的可行性和高效性； （ 2 ）在設計方法中採用較精確的數值反驗算，獲取最優設計方案，大大提高設計的準確性和成功率，並縮短了設計試制周期； （ 3 ）在設計過程中發展了計算機輔助三維葉片造型新方法，可以根據設計需要簡便快捷地對葉片進行「前傾」 、 「傾掠」或「彎掠」造型，這些造型對減小各種二次流損失、擴大穩定工況范圍和控制葉輪機氣動噪聲源起到了非常好的作用。
  12. As an important basic study platform, short - duration turbine testing plat form has developed in the mechanism research field and has now been applied to validation of new design concept and check of cfd software

    同時，作為重要的基礎研究平臺，短周期渦輪實驗臺在機理研究領域也有所拓寬，開始被應用於新設計理念的驗證、 cfd設計分析軟體的校驗等新的領域。
  13. However during initial operation of the plant and for periods immediately prior to and during performance tests, the advisors will be expected to provide 24 hours per day shift coverage and the 48 hours per week limitation and overtime provisions will not apply for periods of shift cover

    但是，在裝置運行前期，並且在快要進行驗收之前以及在檢測過程中，指導人員應每天24小時輪班，每周最多工作48小時，在輪班工作的時候，不計加班費。
  14. Applying the key technique of concurrent engineering - design for function ( dff ), design for assembly ( dfa ) and design for manufacture ( dfm ) of the method of design for " x ", the virtual design of the torque converter is accomplished in catia v5. then the model constitution and the simulation of virtual process of the torque converter is done in catia v5, including the model constitution and the simulation of 5 - aixe nc virtual process of the vane, the model constitution ( material : pvc ) of the idler pulley rapid prototyping ( rp ) and the virtual assembly and the motion simulation of the torque converter, etc. 3 - d data exchange between various cad systems is realized by using step standard. the lever of classing the character model of the torque converter is given

    應用并行工程的關鍵技術之一? ?面向產品全生命周期的設計dfx中面向功能的設計dff 、面向裝配的設計dfa和面向製造的設計dfm的方法，在catiav5中完成液力變矩器虛擬設計；在catiav5中對液力變矩器進行虛擬加工建模和模擬，包括液力變矩器導輪葉片五軸數控加工刀軌建模與模擬、導輪快速成型rp建模（ pvc材料） 、液力變矩器虛擬裝配和運動模擬等；採用step標準實現多cad系統之間三維數據交換，提出液力變矩器特徵模型的分級標準並對三維模型數據進行分級管理，制定相應的權限等級以規范合作廠家的產品數據管理層次。
  15. Taken our country ' s the 9th business cycle and the marketization of finance as a background, this paper has analyzed the forming process of chinese capital structure under the dual function of external economical and financial environments and internal governing mechanism, then derive the main macroscopic environmental factors and company characteristic factors that decided the capital structure choices of chinese listed companies

    本文以我國的第9輪經濟周期和市場化金融改革為背景，分析了在外部經濟金融環境和內部治理機制雙重作用下，我國上市公司資本結構的形成過程，從而導出決定我國上市公司資本結構的主要宏觀環境因素和公司特徵因素。
  16. " this is the first time that able - bodied and wheelchair rugby players will be competing in parallel events and our intention is that it becomes a permanent fixture of hong kong sevens week. i am delighted that two of the best teams in the world are coming to hong kong, " said rob jackson

    鄭震邦博士說：這次是第一次安排健全及輪椅運動員同期舉行賽事，我們希望這會成為香港欖球七人賽周的一項永久安排，我很高興看到世界兩隊最優秀的隊伍來港作賽。
  17. According to different mechanisms, there exist several types of resonance, including the bridge resonance induced by the periodical actions of moving load series of the weights, centrifugal forces and lateral winds of vehicles, the bridge resonance induced by the loading rates of moving load series of vehicles, the bridge resonance induced by the periodical loading of train vehicles excited by rail irregularities, wheel flats and hunting movements, and the vehicle resonance induced by periodical actions of the regular arrangement of bridge spans and their deflections

    根據發生機理的不同，車橋系統可能發生幾種不同形式的共振，包括由車輛重量、離心力、橫向平均風荷載等形成移動荷載列的周期性動力作用引起的橋梁共振，由移動荷載列加載速率引起的橋梁共振，由軌道不平順、車輪扁疤、輪對蛇行等周期性加載引起的橋梁共振；由橋跨的規則性排列及其撓度的影響，對移動車輛形成周期性動力作用使車輛出現的共振。
  18. In large rotating machinery using filmatic bearing ( turbogenerator, air compressor, etc. ) there is a potential trouble from impefect installation or running conditions, a metals " contact between rotors and shells. the trouble is usully called rubbing. the advantage of ae technologe in the rubbing diagnosis and early detection is showed. instead of classical ae characteristic parameters ( counts, amplitude, energy, duration and the other ones ) a new feature extraction by frequency analysis of ae envelop signals is discussed. both research of ae process and field experements indicate that periodic components in the envelop spectrum related to rotational speed increase evidently at the beginning of rubbing production, hence are highly sensitive to the rubbing fault diagnosis. according to the new design an acoustic emission equipment for the rubbing diagnosis named buaa ae testing system is developed and described

    汽輪發電機、空氣壓縮機等採用油膜支撐的大型轉動機械，由於安裝或運行中的原因，在轉子旋轉過程中，可能和器壁發生輕微的摩擦和碰擊，簡稱碰摩.聲發射技術在碰摩發生特別是故障早期診斷上有優越性.本系統的特點是沒有沿用傳統的計數、幅度、能量和持續時間等聲發射特性參數，而是在聲發射包絡信號的頻率分析中進行特徵提取.聲發射發生的過程分析和現場試驗都表明這種方法對碰摩檢測很敏感，在碰摩發生的起始階段，包絡譜中與轉速同步的周期性分量顯著增加.根據這種新的設計思想自行研製了buaa碰摩聲發射檢測儀並對此作了介紹
  19. And since the people " s repubulic of china constructed, it also has 10 business cycles, and the 10th is taking shape. the character of them is that before opening - up the rate of economy fast raised to economy peak and fast fell down to valley, after opening - up, it proceeded at high rate and low fell down

    第三輪周期為單峰周期，前半部分帶有恢復性質，發展比較正常，後半部分受政治運動的破壞，落入谷底，本輪周期形成的原因首推是政治影響，其次為投資作用，再次為工農業生產的影響。
  20. Shift : scheduled periods of work or production, usually less than 12 hours in length, staffed by alternating groups of workers

    輪班：工作或生產的預定周期，一般少於12小時，工作的人員安組輪換。
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