機械對流 的英文怎麼說

中文拼音 [jīxièduìliú]
機械對流 英文
mechanical convection
  • 機 : machineengine
  • 械 : 名詞1. （器械） tool; instrument 2. （武器） weapon 3. [書面語] （枷和鐐銬之類的刑具） fetters, shackles, etc
  • 對 : Ⅰ動詞1 （回答） answer; reply 2 （對待; 對付） treat; cope with; counter 3 （朝; 向; 面對） be tr...
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 機械 : 1. （利用力學原理組成的各種裝置） machinery; machine; mechanism 2. （死板; 刻板） mechanical; inflexible; rigid
  1. Combined heat and mass transfer by natural convection which is caused by heat and mass diffusion can be seen in nature and some processes of industry, such as evaporation and desiccation. these processes relate to aeronautics, hydraulics, mechanics, chemical engineering, oceanography and aerography

    熱及物質擴散引起的傳熱傳質復合自然對流常見于自然界和蒸發、乾燥等工業過程，涉及到航空、水利、機械、化工、海洋、氣象等諸多領域，其流體力學和傳質傳熱特性一直是人們研究的重點。
  2. According to the system technology require, adopting singlechip realize open loop digital control of hdclsm ; using v / f conversion and complex key - control method realize digital setting of system parameter, such as velocity ; using micro - stepping control insure the motor running more smoothly ; adopting debasing speed control method to eliminate the mechanical impact of distance termination effectively ; at the same time, analyzing main power circuits drive circuit and protect circuit of system, completing hardware design and facture and software programming and debugging ; at last, making a whole test in hybrid rotary step motor. the experiment result indicates that this control system reaches the qualities required and run smoothly also

    根據系統技術要求，採用單片機實現了混合式直流直線步進電動機的開環數字控制；利用v f變換和復合鍵控方法實現了系統轉速等參數的數字設定；利用細分控制技術保證了電機運行的平穩性，並進行了波形分析和理論研究；採用單片機軟體降速控制策略解決直線步進電機行程末端的機械沖擊問題；同時對主功率電路、驅動電路和系統保護電路進行了分析，完成了硬體設計、製作和軟體編程、調試，最後在混合式旋轉步進電動機上進行了全面測試。
  3. First, it is compressible and cushiony ; second, it can be transported to a long distance with a little power loss ; the last, its flux and velocity of flow are quite high, so the reaction time of the operators can been considerably shortened. aiming to solve the problems of vibrating machinery such as short life - span, poor cushion and high energy consumption, the writer, on the basis of characteristic of pneumatic mentioned, contrives a set of valve controlled pneumatic vibrator, which has larger output vibrating force and longer life - span with simple structure. then, it is applied to drive a vibrating screen and the result is fairly well

    文中針對氣動技術本身的特性及優點，如：可壓縮，具有緩沖性；能耗損失小，便於遠距離輸送；流量大、流速高，執行元件響應速度快等，以解決振動機械在應用過程中的緩沖、能耗以及使用壽命等問題為目的，設計出一套輸出激振力大、結構簡單、使用可靠的閥控氣動激振器，並將其成功地運用到振動篩上，取得了較好的效果。
  4. The integral equations governing the three - dimensional viscous flow inside the turbo - machinery in the rotating coordinate system are presented in this paper, the viscous effects are simulated by the distributed body force described by professor denton j. d. the time - marching method and explicit finite volume difference scheme are employed to solve the flow inside the turbo - machinery

    本文給出了相對旋轉坐標系下葉輪機械內部三維粘性流動的守恆型積分型方程組，利用dentonj . d .教授的粘性體積力法來模擬粘性對葉輪機械內部流動的影響，採用時間推進法和有限體積差分格式對葉輪機械內部的流動進行求解。
  5. Different kind space cameras use different image motion compensation methods and drift angle controls respectively. applications of drift angle control in mechanical image motion compensation and electronic image motion compensation are introduced and analyzed in this paper

    不同類型的空間相機有不同的像移補償方法，也就有不同的偏流角控制方法，本文對機械像移補償法、電子學補償方法等像移補償方法中的偏流角控制及作用進行分析。
  6. The function of desert microbiotic crusts in erdos was analyzed, the results ahowed that : microbiotic crusts consist of fine sand and thick powder sand, but differs with the wind - drift sand, wind - drift sand are coarse sand and fine sand ; microbiotic crusts influence the rainfall distribution again and effect on the evaporation of infiltration moisture ; microbiotic crusts has the power of water conservation and the function of enrichment of nutrients

    摘要本文對鄂爾多斯沙漠生物結皮作用進行了初步研究，結果表明結皮層的機械組成以細沙和粗粉沙為主，而流沙以粗沙和細沙為主；生物結皮層影響降水的再分配作用，並影響入滲水的蒸發規律；生物結皮層縣有較好的保水特性和養分富集作用。
  7. Considering the general low visibility, and disabled submarine ' s big inclining, rapid ocean current condition of china ' s sea area, a multi - manipulator interfacing instrument of dsrv is developed

    基於我國多數海區能見度低的情況，以及失事潛艇具有較大縱橫傾、海底水流較大等不利狀況，研製了深潛救生艇多機械手對接裝置。
  8. For obtaining the numeral solutions of round elastic plates in axisymmetrical deformation with varying - thickness in nonlinear deformation in the unsteady electromagnetic field and mechanical field, by establishing the equations of motion, the equations of distortion, the equations of lorentz force, the equations of electronic dynamic mechenical, and adopting iterative method, we gained the nonlinear magneto - elastic calculation method and outcome of current - carrying shell, and gained the influencing degree toward mechanical parameter of varying thickness round ferreous plates in the electromagnetic field and mechanical field

    摘要為了獲得內邊界固定的環形導電薄板在均布力與橫向磁場作用下的變形問題的數值解，通過建立運動方程、變形方程、電動力學方程和洛侖茲力方程，運用迭代法得出了載流板殼的非線性磁彈性的計算方法和結果，以及機械場、電磁場對鐵質變厚度圓板各力學參量的影響程度。
  9. Abstract : this paper analyzes causal factors of flood in the middle reaches of changjiang river. due to neglection of environmental management, soil erosion in the upper and middle reaches of the changjiag river, lake sedimentation, large - scale reclamation of marshes, the flood regulation capacity of the lake was descended, and flood stage was risen and prolonged. consequently more and more river levees and lake dikes were reinforced almost every year to prevent the disasters, which made flood level go up and flood period last for more days. the frequency of flood and waterlogging disasters rose and their damage was enlarged. several proposals for flood prevention including agricultural modernization are put forward

    文摘: 1998年長江大洪水后開始實施的「平垸行洪，退田還湖」的土地利用調整方案，從長遠來說應尋求農業安全且收入逐漸提高條件下的土地利用，長江中游地區應積極推進農業現代化，提高農業勞動生產率，轉移，減少分蓄洪區的人口，移民建鎮，對區內的土地要促進其規模經營，由優秀的有文化的農民經營，平時只有少量的直接從事農業生產的經營管理人員，農忙時則大量地使用季節性合同工或實現機械化，大洪水時退田還湖，減輕長江幹流大洪水的壓力，減少分洪與特大洪災時的損失，這樣還可促進避洪、冬季農業等的發展，也有利於長江中上游地區陡坡耕地的退耕還林，還可在糧食充足時進行休耕，在旱災、糧食緊張時擴大糧食生產?
  10. The passing parts of this catena product all adopt fluorine plastics alloy to press, its headmost product of fluorine alloy centrifugal pumps, axis - envelop choose advanced outer - install form moire - pipe machine - airproof, airproof of oppositely abrade have silicon nitride chinaware f4 horniness alloy to choose

    本系列產品過流部件全部採用氟塑料合金模壓成型工藝製造，是國內生產的最早的一代氟合金離心泵產品，軸封選用先進的外裝式波紋管機械密封，對磨的密封面有：碳化矽陶瓷四氟硬質合金可供選擇。
  11. From a child this frank had been a donought that his father, a headborough, who could ill keep him to school to learn his letters and the use of the globes, matriculated at the university to study the mechanics but he took the bit between his teeth like a raw colt and was more familiar with the justiciary and the parish beadle than with his volumes

    彼曾受雇於一名在波爾多118擁有酒窖之白蘭地出口商，操上流人士之文雅法語。弗蘭克生性怠情，其父一小警官煞費苦心，送彼學習文理並掌握地球儀注冊升入大學，專攻機械學。然而彼任性放肆若未馴之野駒，對法官與教區差役比對書本更親。
  12. Compared with the conventional electromagnetic motor, the ultrasonic motor has the following features : high speed, high holding torque when power is off and so on. because of it ' s characteristics, the ultrasonic motor has obtained some widespread application in robots, precise instrument, house electronical appliance, sapceecraft automobile and micromechanism

    主要有以下幾個部分： 1建立了兩相混和式電動機的穩態數學模型，分析了超前角對相電流及機械特性的影響，並同時進行了模擬研究，給出了一些有意義的結論。
  13. It is necessary to control the mechanical stimuli precisely in the studies of cardiac mechano - electrical feedback ( mef ). in the present study a ventricular pressure - clamping system has been developed, which can be applied to isolated - perfused rabbit hearts. controlled by a computer, this system not only can make the left ventricle follow a command defining the same pressure wave as that during a beating cycle under physiological condition, but also deliver mechanical stimuli with a proper waveform to the ventricle at a particular time phase. this system integrates multiple functions, including perfusing, pacing, recording of electrocardiogram and monophasic action potentials, and clamping and measuring of ventricular pressures in isolated - perfused hearts. thus, it is a distinct system for investigating the phenomena and mechanisms of cardiac mef at organ level

    在心臟機械電反饋的研究中準確控制機械刺激是非常重要的.本研究室構建了一套適用於離體家兔心臟的心室壓力鉗系統.該系統通過計算機控制壓力鉗，不僅能模擬正常生理條件下左心室的壓力波形，還能在心室活動周期的特定時相、以適當波形對心室施加機械刺激.該系統集心臟灌流與起搏、表面心電圖記錄、單相動作電位記錄、心室壓力鉗制與測定等多種功能於一體，特別適用於器官水平上觀察機械電反饋現象並探討其機制
  14. Abstract : it is necessary to control the mechanical stimuli precisely in the studies of cardiac mechano - electrical feedback ( mef ). in the present study a ventricular pressure - clamping system has been developed, which can be applied to isolated - perfused rabbit hearts. controlled by a computer, this system not only can make the left ventricle follow a command defining the same pressure wave as that during a beating cycle under physiological condition, but also deliver mechanical stimuli with a proper waveform to the ventricle at a particular time phase. this system integrates multiple functions, including perfusing, pacing, recording of electrocardiogram and monophasic action potentials, and clamping and measuring of ventricular pressures in isolated - perfused hearts. thus, it is a distinct system for investigating the phenomena and mechanisms of cardiac mef at organ level

    文摘:在心臟機械電反饋的研究中準確控制機械刺激是非常重要的.本研究室構建了一套適用於離體家兔心臟的心室壓力鉗系統.該系統通過計算機控制壓力鉗，不僅能模擬正常生理條件下左心室的壓力波形，還能在心室活動周期的特定時相、以適當波形對心室施加機械刺激.該系統集心臟灌流與起搏、表面心電圖記錄、單相動作電位記錄、心室壓力鉗制與測定等多種功能於一體，特別適用於器官水平上觀察機械電反饋現象並探討其機制
  15. This paper researches and analyses the developments of web technology and magnetostrictive transducers from world wide region. the paper also analyes the characteristics curve of magnetostrictive transducers based on its equivalent circuit and researches the method how to make sure its syntony frequency and its electric simulation network parameters. at the same time, by using jsp technology, a magnetostrictive transducer electric simulation application is designed based on b / s three - tier system structure. the experiment data is fitted by curve fitting module. the equivalent input impedance of it with stimulate loop is separated based on the results of curve fitting and the syntony frequency and electric simulation network parameters of magnetostrictive transducers is determined by the input impedance. the method presented in this paper can determine the syntony frequency and electric simulation network parameters of magnetostrictive transducers with a better accuracy than the testing method of syntony & anti - synton y. further more, jsp, the advanced technology at current, has been used to realize a magnetostrictive transducer web electric simulation system. the system has good human computer interface and the function of resource sharing and information publishing. the research of this paper and its achievements have some practical merits in the researchful and applied fields of magnetostrictive transducer

    用java編程語言編寫的曲線擬合模塊，對輸入的實驗數據進行了最小二乘法的曲線擬合；根據曲線擬合結果可從帶激勵線圈的磁致伸縮換能器的輸入阻抗中分離出磁致伸縮換能器鐵芯在無激勵電流時由機械振動形成的等效輸入阻抗，並由此輸入阻抗確定磁致伸縮換能器的諧振頻率及電氣模擬網路參數。本課題提出的方法與傳統的諧振?反諧振法相比，能更準確地確定磁致伸縮換能器的諧振頻率及其電氣網路參數。同時，採用當前比較先進的web技術，實現了基於jsp的磁致伸縮換能器web電氣模擬系統，該系統具有良好的人機界面和資源共享、信息發布功能。
  16. At the same time, the function of measuring coal in every coal storage bunker and measuring coal before its entering into every boiler greatly improves productivity of the whole loading and unloading coal system. on the aspect of operation technics of the loading and unloading coal system, this article analyzes factors which affect operation technics of coal - whippers, stacking conveyers and pusher tractors. no standardization in daily operation, low safety, long operation time and out of line among different machines reduces the efficiency of the loading and unloading coal system

    卸煤操作工藝方面，主要分析了卸船機、堆取料機和推扒機在日常作業過程中影響作業工藝的因素，在日常作業過程中主要存在問題是無標準化作業要求，安全得不到保障，作業時間長，各作業機械之間配合差，從而影響整個卸煤系統的作業效率，本文通過對卸船機、堆取料機、推扒機作業流程的設計，規定了單個機械的作業程序，以及相互之間作業時的配合方法，使卸船機作業和堆場作業更規范化，同時，大大縮短卸船作業時間，提高了碼頭泊位利用率，減少機械作業時間，從而提高了整個輸煤系統的工作效率。
  17. This paper discusses acid rinsing maintenance of hydraulic pipes in hoisting and conveying machinery, including basic procedures and acid liquid compounding

    摘要文章重點介紹如何用酸洗的方法對起重運輸機械液壓管道進行維護、保養，以及在酸洗保養過程中應掌握的基本工藝流程和酸洗液的配製方法。
  18. It is studied that the formation mechanism of taylor bubble and its control method in gas - liquid two - phase flow, which affects the pressure balance and mechanical driving efficiency in the flow of petroleum engineering. experiments show that the formation of taylor bubble in gas - liquid two - phase flow is due to the intensive congregation and amalgamation of small bubbles driven by void fraction waves and that the highly turbulent flow is able to restrain this formation. thus, the flow regime transition may be checked by increasing the flow turbulence and controlling the disturbed frequency

    對大管徑氣-液兩相流動中嚴重影響壓力平衡與機械驅動效率的段塞流生成機制和控制方法進行了研究，實驗證明段塞流的形成是由於空隙率波的大幅度增長使氣泡高度集中，並形成聚並所致。強湍流運動可以抑制taylor泡的形成。因此，通過強化湍流或控制擾動頻率可以對氣泡聚並起明顯的抑制作用。
  19. But it is thought that the mature pump inner flow numeric computation was started and then developed rapidly after the " two relative flow surface " ( the s1 and s2 ) theory presented by professor wuzhonghua

    但具有完備形態的內流數值模擬，一般認為始於吳仲華教授的s1 、 s2兩類相對流面理論后，葉輪機械內流數值模擬才得到了迅速發展。
  20. Unsteadiness is an essential attribute of the flow in turbomachinery. the related work has been one of the major problems in the research of turbomachinery aerodynamics, and has focused much attention of scholars for many years

    非定常性是葉輪機械內流動的本質屬性，對葉輪機械非定常流動的研究是近年來葉輪機械氣動熱力學領域里的難點和熱點之一。
分享友人
分享到 Line

分享到臉書