難題箱 的英文怎麼說

中文拼音 [nántíxiāng]
難題箱 英文
problem box
  • 難 : 難Ⅰ形容詞1 （做起來費事的） difficult; hard; troublesome 2 （不容易; 不大可能） hardly possible 3...
  • 題 : Ⅰ名詞1. （題目） subject; title; topic; problem 2. （姓氏） a surname Ⅱ動詞（寫上） inscribe; write
  • 箱 : 名詞1. （箱子） chest; box; case; trunk 2. （像箱子的東西） anything in the shape of a box
  • 難題 : difficult problem; a hard nut to crack; aporia; poser; hot potato; facer; headache; stinker; teas...
  1. In the light of the problems of the air balance system of model lcj1250 chain drive pumping unit, it is proposed to change the air balance with counterweight balance, and three criteria for the modification is put forward : ( 1 ) ensuring the reliability of the unit with smooth operation, low noise and long life ; ( 2 ) cutting down the production cost and using less component parts as possible ; ( 3 ) carrying out modification without such main technical parameters as stroke, pumping speed and maximum polished rod load

    針對lcj1250氣平衡式鏈條抽油機存在氣平衡故障率高和現場維修困難等問題，提出將氣平衡改造成工作可靠的重力平衡的方案，並確定了改造的三個原則：一是保證整機的可靠性，使抽油機運轉平穩，振動噪音小，壽命長；二是力求降低生產成本，減少零部件製造，盡可能選用原來的通用件，捨去平衡缸和空氣包等氣平衡附件，在原往返架主體上懸掛一個配重箱；三是力求不改變沖程、沖次及最大懸點載荷等主要技術參數。
  2. Abstract : in the light of the problems of the air balance system of model lcj1250 chain drive pumping unit, it is proposed to change the air balance with counterweight balance, and three criteria for the modification is put forward : ( 1 ) ensuring the reliability of the unit with smooth operation, low noise and long life ; ( 2 ) cutting down the production cost and using less component parts as possible ; ( 3 ) carrying out modification without such main technical parameters as stroke, pumping speed and maximum polished rod load

    文摘:針對lcj1250氣平衡式鏈條抽油機存在氣平衡故障率高和現場維修困難等問題，提出將氣平衡改造成工作可靠的重力平衡的方案，並確定了改造的三個原則：一是保證整機的可靠性，使抽油機運轉平穩，振動噪音小，壽命長；二是力求降低生產成本，減少零部件製造，盡可能選用原來的通用件，捨去平衡缸和空氣包等氣平衡附件，在原往返架主體上懸掛一個配重箱；三是力求不改變沖程、沖次及最大懸點載荷等主要技術參數。
  3. Supposed to be axial symmetry, the problem is put into the cylindrical coordinate, and through the laplace - hankel transformation, the equations are turn into differentia equations of constant coefficient. in the analyzing progress, dynamic transfer matrix is used t

    本文利用matlab中fzzzy具箱編程，通過有限的實驗數據和輸入專家知識對該系統進行訓練，可以解訣砂土液化的預測難題，算例的檢測結果表明其效果較好。
  4. The automobile industry of shenyang has very special characteristic, the city has the most automobile brands in our country such as bmw, hino, jinbei and including the style of suv. mpv etc. shenyang is the highest opening city on the automobile industry that introduced such world - class automobile producers as german bmw, american gm, japan hino and the international known spare part enterprise such as u. s. a. jiangsen, germany elfe, french michelin

    而發動機移到後面也產生了諸多問題，例如水箱布置困難，發動機散熱等冷卻問題不好解決又如乘員廂前面失去了發動機做「安全屏障」 ，汽車前端需要加固處理從而使成本上升而發動機等后移使得前輪附著力變小，高速時轉向不穩定，影響了操縱穩定性。
  5. This algorithm easily escapes from local optimal solution, have high searching efficiency, simple structure, convenient use. aiming at iteration, optimization and matlab optimization toolbox having low precision and difficulty to choose initial vector on acquiring nonlinear equations ’ solutions, equations ’ solution problem is translated into genetic algorithm optimization problem. nonlinear equations ’ usual genetic

    針對迭代法、最優法、 matlab最優化工具箱求解非線性方程組中存在求解精度不高及初始矢量難選等問題，將方程組求解問題轉化為遺傳演算法函數優化問題，建立了非線性方程組通用的遺傳演算法解法，並將其用於汽車滑行試驗數據處理中。
  6. This subject belongs to three - dimensional layout problems with behavioral constraints theoretically and concerns the knowledge of spacecraft design, mechanical engineering, computer science, mathematics, mechanics and system engineering. so it can be ascribed as the frontier fundamental and applied research of cross - discipline subject with np complexity theoretically. in term of engineering practice, this subject has extensive applications, such as layout design of spacecraft module, engineering machinery, submarine and shipping, tank, under - water suspension engineering, platform of marine drilling well, bullet train, multiple spindle box of machine tool, robot

    該課題在理論上，屬帶性能約束的三維布局問題，涉及航天器設計、機械工程、計算機、數學、力學和系統工程等學科，為交叉學科前沿課題的基礎理論和應用基礎研究，具有np難度；在實踐上，具有廣泛的工程應用背景，如航天器艙、工程機械、潛艇、船舶、坦克、水下懸浮工程、海上鉆井平臺、高速列車、組合機床多軸箱、機器人等的布局方案設計問題。
  7. It possesses not only the self - learning ability and adaptability, but also the function of self - adjusting factors. based on fuzzy set, neural network theory, the fuzzy control model and fuzzy neural network control model of multi variable system are presented. based on the automatic core - welding line of shop floor control system in yangzhou radiator plant computer integrated manufacturing system ( ys - cims / sfcs ), the fuzzy logic theory was applied to the controlling device and established the main heating room fuzzy temperature controller and finally was put into practical use

    本文採用了基於神經網路技術的智能pid控制策略，設計了一類具有自學習和自調整比例因子功能的神經元網路自適應pid控制器的結構及演算法；為解決結構不確定性的復雜多變量系統的控制，基於模糊集及模糊系統、神經網路理論，建立了多變量系統的模糊控制模型及模糊神經網路控制模型；針對揚州水箱廠計算機集成製造系統車間管理與控制系統（ ys - cims sfcs ）中的實際工程問題，設計和開發了散熱器芯子烘焊自動線主烘腔溫度模糊控制器，解決了生產中長期存在的老大難問題，提高了產品質量，降低了單產能耗。
  8. ( 2 ) in this paper, the author summarized the working principle, the superiority and the limitations of a few main kinds of classical sprinkler systems ; put emphasis on the importance of a few key points which is relevant to the function of the system, such as the choosing of sprinkler and it ' s fixing, the automatic checking function of water pump, the layout of alarm valve, especially the choosing of sprinkler and it ' s fixing ; looked through the feasibility of which we used water instead of gas by water mist especially finely divided water mist fire - extinguishing technique

    展望了水噴霧技術特別是細水霧技術進行以水代氣滅火的可行性。 （ 3 ）針對工程設計中最復雜，工作量最大的部分-系統水力計算部分，在規范的基礎上，基於excel電子表格，提出了經濟流速的范圍，提供了一套行之有效的設計計算方法，同時，對屋頂水箱和增壓泵的設置這一難以解決的問題發表了見解，既確保了自動噴水滅火系統初期快速滅火、控火的性能，又節省了大量的設計工作時間。
  9. An available neural network toolbox ( nnt ) in matlab, however, solves the problem

    而matlab軟體提供了一個現成的神經網路工具箱（ neuralnetworktoolbox ，簡稱nnt ） ，為解決這個難題提供了便利條件。
  10. Abstract : the paper introduces the erection of the steel box girder of a long - span steel box - concrete composite bridge using broad double guide beam without affecting the normal operation of electrified railway and marshalling yard under the bridge, including construction plan, design of gantry crane and guide beam, as well as key points of construction technology

    文摘:介紹在保證電氣化鐵路、編組站場正常運營情況下，運用寬幅式雙導梁解決大跨度鋼箱混凝土結合梁橋的鋼箱梁架設技術難題，重點闡述了施工方案，龍門吊、導梁設計，工藝要點等。
  11. The aim of the paper is to research the system of mechanical drawing schoolwork correction according to the structure of the corrected parts, the schoolwork correction system can be divided into series of shaft - like, plate - like, fork - like and box - like subsystems a in the past several years, many difficulties of shaft - like correction subsystem had been solved so, this task is to find the common principle and process of the plate - like drawing correction system which is based on existent results, and this can help to the subsequent research on the plate - like drawing correction system according to the property of the errors, all drawing errors can been divided into absolute errors and comparative errors

    按照批改零件的結構類型，機械制圖作業批改系統可以分為軸套類、盤蓋類、叉架類和箱體類一系列的子批改系統。經過幾年的研究，軸套類作業批改系統的大量技術難題已經得到解決，並且提出了一系列重要的演算法，現在已經能夠正確批改一些軸類作業圖。本課題的任務是繼承已經取得的成果，探索盤蓋類零件圖作業批改系統的一般過程和規律，為盤蓋類作業批改系統的后續研究作技術準備。
  12. It is difficult to solve the container movement track optimization problem by using general method to solve optimization problem such as minimum value method and dynamic plan. this can be seen clearly through mathematic analysis

    通過對集裝箱運行過程的數學分析可以看出用解決優化問題的常用方法如極小值原理和動態規劃等方法對集裝箱運行軌跡進行優化是困難的。
  13. So it is appears important to analyse capability of this structure, the people can compute all kinds of complex structure ’ s response under different sorts of exact load on current software, but the source program of the computing question, which is “ black box ”, on the contrary, fepg can get the source program, which can provide preference for the optimization of structure, even embed in the optimizing program and save much time of compiling program, linking to ga to identify the load can get the good result. so the problem is solved to alleviate the deadweight and the optimize design of the structure, as well as improve its secure capability

    對格柵結構進行力學分析就顯得至關重要，盡管利用通用有限元軟體能夠計算結構承受任意可以準確描述的載荷作用下的響應問題，但內部計算卻是「黑箱」操作，利用fepg可以得到計算源代碼，能夠為優化程序提供參考甚至可以嵌入其中，節省繁瑣的有限元計算編程內容，結合遺傳演算法進行載荷重構，往往會收到很好的效果，這就解決了由於工作環境比較復雜，引起響應的載荷難以直接測量得到的難題，從而為結構優化設計和提高安全性能的提供了保障。
  14. The paper " s mostly work is to achieve the cover relation in the virtual studio, the major research is for locking the real camera and the virtual camera, the paper solve the technique problem such as : calibration for electromechanical camera tracking, by transferring coordinate, lock the movement of the virtual camera and the real camera ; present an algorithm to carry out the function of the unlimited blue box, resolve the matter that the floor of virtual studio is small ; achieve the relation of cover in the three dimension scene, which make the virtual studio can give the impression of the histrionic " s interlude perform in virtual scene,

    本文的主要工作是實現虛擬演播室系統中的遮擋關系，重點研究了虛擬攝像機和真實攝像機的鎖定。本文主要解決了以下技術難題：攝像機機電跟蹤系統的校準，通過坐標變換，將虛擬攝像機和真實攝像機的運動鎖定；實現了無限藍箱的演算法，解決虛擬演播室場地小的問題；實現了三維遮擋關系，使得虛擬演播室能實現演員在虛擬場景中穿插表演的效果。
  15. This method overcomes the problem of low metering accuracy of vertical auger

    克服了立式螺旋計量精度不高的難題，並配有夾袋裝置和吸塵回收箱。
  16. Rubber - tired cranes still have their advantages over other integrated container yard machines. although having the deficiencies of the recognition of their positions and the crane offsetting

    輪胎吊在集裝箱場地機械中，雖然存在著難以辯定位置和大車跑偏問題，但仍有著明顯的優勢。
  17. In view of the technical problems of softening of foundation soil and reduction of bearing capacity of the breakwater under the action of repeated wave loads during the execution of the second phase of the deepwater waterway regulation project in the changjiang estuary, tianjin port construction corporation has successfully developed safer, higher quality and highly efficient technology and special - purpose marine craft and machinery for laying deepwater sand blankets and offshore installation of prefabricated drains, which were more suitable for the working conditions in the changjiang estuary, and has also explored the construction technology for prefabrication of caissons with rubber anti - sliding plates, to ensure the efficient implementation of the engineering measures against softening of foundation soil

    摘要針對長江口深水航道治理二期工程施工過程中遇到的堤身在波浪重復荷載作用下地基土出現軟化、承載力降低的技術難題，第一航務工程局成功開發了適合長江口工況的安全、優質、高效的深水砂被鋪設和海上塑料排水板打設施工工藝及專用船機設備，探索了一整套帶橡膠阻滑板的沉箱預制施工工藝，確保了抗軟化工程措施的有效實施。
  18. Shortly after discovery blasted off july 26, a nearly 1 - pound chunk of foam insulation fell from the fuel tank - - the very thing that was supposed to have been fixed after dooming columbia

    「發現」號7月26日點火升空后不久，一塊近一磅重的泡沫絕緣材料從燃料箱上脫落，而當年「哥倫比亞」號正是毀于同樣的問題，之後這個難題被認為得到了解決。
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