無用空間 的英文怎麼說

中文拼音 [wúyòngkōngjiān]
無用空間 英文
dead space
  • 無 : 無Ⅰ動詞（沒有） not have; there is not; be without Ⅱ名詞1 （沒有） nothing; nil 2 （姓氏） a surn...
  • 用 : Ⅰ動詞1 （使用） use; employ; apply 2 （多用於否定: 需要） need 3 （敬辭: 吃; 喝） eat; drink Ⅱ名...
  • 空 : 空Ⅰ形容詞（不包含什麼; 裏面沒有東西或沒有內容; 不切實際的） empty; hollow; void Ⅱ名詞1 （天空） s...
  • 間 : 間Ⅰ名詞1 （中間） between; among 2 （一定的空間或時間里） with a definite time or space 3 （一間...
  • 無用 : useless; of no use
  • 空間 : space; enclosure; room; blank; interspace
  1. This paper focuses on the problem of semi - infinite elastic body filled with the material which behaves differently in tension and compression. the contents include : ( 1 ) the solution of elasticity theory for the material incapable in tension is established by introducing heaviside function ; ( 2 ) the solution of elasticity theory with different modulus in tension and compression is established based on the solution of elasticity theory for the material incapable in tension and mindlin ' s solution ; ( 3 ) the solution of elasticity theory with different modulus in tension and compression is employed to analyze the stress of pile foundation ; ( 4 ) the solution of elasticity theory with different modulus in tension and compression is employed to analyze the settlement of pile foundation

    本文考慮材料的拉壓性能不同的特點，對半無限空間內部作用豎向集中力問題進行了新的研究，做了如下工作： （ 1 ）引入heaviside函數，建立了不能承受拉應力材料的彈性理論解； （ 2 ）基於不能承受拉應力材料的彈性理論解和mindlin解，建立了拉壓模量不同材料的彈性理論解； （ 3 ）將拉壓模量不同材料的彈性理論解應用於樁基應力分析； （ 4 ）將拉壓模量不同材料的彈性理論解應用於樁基沉降分析。
  2. The precision of its calculating results has an direct effect on the design, construction and safe usage. in the typical calculation of the settlement of foundation, additional stress incurring by loading is calculated according to elastic theory which has the same characteristics in semi - indefinated space, the condesion of soil is decided by the condesion experiment of one - demension and the settlement is calculated by adding results of respective layer

    地基沉降計算一直是困擾巖土工程技術人員的一個難題，其準確與否將直接影響建築物的設計、施工和安全使用。在經典的地基沉降計算方法中，荷載作用下地基中附加應力場是根據半無限空間各向同性彈性體理論計算的，土體壓縮性是根據一維壓縮試驗確定的，並採用分層總和法來計算地基的沉降量。
  3. Since the wireless transmission system makes the best use of msp430 family chip, which is effective, high speed and precision, it is specially designed for the turbo _ generator monitoring which is handy or powered by batteries, or the room is very limited

    本文利用msp430超低功耗和高集成度的優點，專門針對電池供電和使用空間受限的汽輪機組監視保護儀表，設計、實現了傳感信號的無線數字傳輸系統。
  4. In this paper, a simplified model for dam - foundation dynamic interaction analysis in time domain is proposed in terms of the studying of the characteristics of the dynamic impedance of canyon cut in elastic half - space

    通過對拱壩地基的半無限空間動力體系的分析，提出了拱壩-地基動力相互作用問題的簡化求解途徑，並結合小灣拱壩進行了實際分析。
  5. Abstract : in this paper, a simplified model for dam - foundation dynamic interaction analysis in time domain is proposed in terms of the studying of the characteristics of the dynamic impedance of canyon cut in elastic half - space

    文摘:通過對拱壩地基的半無限空間動力體系的分析，提出了拱壩-地基動力相互作用問題的簡化求解途徑，並結合小灣拱壩進行了實際分析。
  6. According to the test result, the mechanism of inorganically post - installed bars with cone - shaped heads was analyzed. and then the anchor intensity formula was formulated. the inorganically post - installed bars with cone - shaped head was carried on the finite element analysis on the spatial axial symmetry model

    根據試驗結果，對帶錐頭無機植筋的受力機理進行了理論分析，推導出帶錐頭無機植筋的錨固強度公式，並利用空間軸對稱模型對帶錐頭無機植筋進行了有限元分析，提出了利用桿單元模擬鋼筋與混凝土之間的粘結滑移關系的方法。
  7. Make a general survey of the 21st century when the modern science and technology is developed at a high speed, from toy for children to household appliances, from industrial structure to space technology, use the field and limitless space, has already begun to replace the traditional switch in each field, and go on the leading position progressively, become the era mainstream

    縱觀現代科技高速發展的21世紀，從兒童玩具到家用電器，從產業結構到航天技術，使用領域和無限空間，已經開始在各個領域中取代傳統的開關，並逐步走上主導地位，成為時代主流。
  8. The control tactics of space voltage vector are investigated, and the simplified algorithm which judges the sector location of reference vector and calculates switch operation time is put forward. by analyzing the current hysteresis control, the relation between switch frequency, and hysteresis bandwidth and input inductance of pwm rectifier is deduced. by applying instantaneous power theory, the principle of pwm rectifier power control is analyzed, and the direct power control by matlab toolbox through estimating active power and reactive power with virtual flux is realized, and the simulation results prove that it is correct

    對常用空間電壓矢量控制策略進行分析，提出了給定參考矢量所在區間判斷的簡化方法，以及電壓矢量作用時間的求取方法；分析了電流滯環控制策略，推導出開關頻率與滯環帶寬以及整流器輸入電感之間的關系；應用瞬時功率理論分析pwm整流器功率控制原理，通過虛擬磁鏈估計有功功率和無功功率，用matlab實現了直接功率控制，並驗證了該控制方法的正確性。
  9. The astronaut yang liwei, spirited and assured, made his way into shenzhou - 5, the largest manned spacecraft in the world up to this time. on his shoulders rested the task of achieving glory for the nation. armed with courage and propelled by a sense of responsibility, he was ready for the momentous journey into space. shenzhou - 5 was launched into space by the changzheng - 2f carrier rocket, nicknamed the " magic arrow "

    二零零三年十月十五日早晨，酒泉衛星發射中心一切就緒，航天員楊利偉英姿勃發，神情自若，步入目前世上可用空間最大的載人飛船神舟五號，肩負為國爭光的大任，心懷雷霆不移的大勇，責無旁貸，義無反顧，踏上了乘雲陵霄、遨遊穹蒼的征途。
  10. With the rising demand ever, the orbital resource and frequency spectrum resource for gso communication satellite has been almost fully exploited and utilized, by means of cross polarization, multi coverage, and orbital space reduction

    隨著通信需求的增長，人們採用極化復用、空間復用和縮小軌位間距等手段，對靜止衛星軌位和無線電頻譜資源作了接近極限的開發利用。
  11. Using this wave function, the problem can be summarized to the scattering of sh - wave by a shallow - embedded circular lining structure in infinite space

    利用這一波函數，則可將該問題轉化成對一個無限空間中淺埋圓形襯砌對sh波散射的求解問題。
  12. Vertical concentrated load acting into semi - infinite elastic body is a basic problem in theory of elasticity. mindlin ' s solution is used broadly to solve engineering problems

    半無限空間內部作用豎向集中力問題是彈性理論的典型問題，經典彈性理論的解答即mindlin解在解決工程問題時得到了廣泛的應用。
  13. Using this scattered wave function and moving coordinate system, the problem can be summarized to scattering of sh - wave by multiple circular cavities in infinite space and the boundary conditions can be satisfied

    利用這一波函數，則可將該問題轉化成為一個對無限空間中相鄰多個圓形孔洞對sh波散射的求解問題。
  14. The solution of the interior problem has been obtained by the fem method. ensuring the continuity of the tangential electric field across the aperture plane, the electromagnetic e and h has been gained

    分別採用有限元法和矩量法分析封閉腔體和半無限空間的電磁場，在孔徑面上進行邊界條件匹配，從而得出極化雙工柵中的電磁場特性。
  15. The conformal microstrip antenna with some unique character has been applied in many fields, especialy on speedy objects. in this paper, an efficient fdtd algorithm is introduced to analyse the microstrip antenna. firstly, the fdtd formula in descartes coordinate system and in cylindrical coordinate system are obtained from the time _ dependent maxwell equations using the yee algorithm in a calculating region where the dielectric parameters are independent of time and space. the choice of the space discretization units and the time discretization interval are discussed which are decided by the accuracy and stability respectively. the shape and setup of the excitation source are discussed too. the excitation source is chosen to be gaussian pulse in shape. secondly, the mur ' s first - order and second - order boundary condition are deduced in cylindrical coordinate system. the methods of transforming radiation fields from near zone to far zone in the frequency domain and in the time domain are presented when fdtd is applied to analyse the characteristics of far zone. finally, three kinds of microstrip antennas are analysed. they are a slot antenna that lies on a plane ground of a microstrip, a slot antenna that lies on a cylindrical ground of a microstrip and a microstrip line _ fed aperture coupled stacked rectangular patch antenna in cylindrical coordinate system

    本文從麥克斯韋旋度方程出發，建立了笛卡兒坐標下無源空間中均勻無耗媒質的fdtd基本方程和圓柱坐標下無源空間中均勻無耗媒質的fdtd基本方程，詳細討論了fdtd法計算中時間步長和空間步長的選取原則以及激勵源的類型和設置；推導了mur一階和二階邊界條件在圓柱坐標下的差分格式；給出了在用fdtd法計算天線的遠場輻射特性時必需採用的頻域和時域近場遠場變換技術；最後用fdtd法計算了平面微帶縫隙天線、柱面共形微帶縫隙天線和柱面共形微帶層疊天線的輸入阻抗和遠區輻射場，並分析了天線的一些參數的變化對天線輸入阻抗的影響，得出了一些有用的結論。
  16. In order to keep the quality of ultrapur, we recommend to wear disposable polyethylene gloves and to handle ultrapur in a clean - box, clean - bench or clean room under class 10

    使用前注意事項：為維持utrapur之品質，建議穿著聚乙烯手套並在10級之無塵空間中處理。
  17. After the mathematical model of asynchronous electromotor is build, the method of space voltage vector is taken to discuss the essential principle and structure, and arithmetic of direct torque control, and the application of circular magnetic chain self - operated control and the technology of sensor without velocity in direct torque frequency conversion timing are emphasized

    在建立異步電動機的數學模型之後，採用空間電壓矢量分析方法討論了直接轉矩控制的基本原理結構及其演算法，著重研究了圓形磁鏈自控制和無速度傳感器技術在直接轉矩變頻調速中的應用。
  18. The simulation results have shown that sigvd of the temporal part is observed when the diffraction - free distance is longer than the dispersion length of sigvd. sigvd can be used to compensate the dispersion of medium, and a diffraction - free and quasi - dispersion - free pulsed beam, similar to a spatiotemporal soliton, can be produced in a dispersion medium

    數值模擬的結果表明，只要相應的衍射距離大於空間誘導色散的距離，空間誘導色散理論可以很好的描述脈沖的演化過程；利用空間誘導色散可以補償介質色散，從而可以在色散介質中實現無衍射無色散的類時空孤子的傳輸。
  19. The exquisite design of the gearless synchronous engine, only half the size of that traditional one is most appropriate for no - engineroom and the mini - engine room elevator which saves more available space for the building

    設計精巧的無齒輪永磁同步曳引機，體積只有傳統曳引機的一半，最適用在無機房和小機房的電梯上，為建築物創造了更多的可用空間。
  20. The thesis bring forward necessity of build under - pipe information system use the newest technology of gis - webgis based on webgis through analyze under - pipe in city and research the method of traditional management of under - pipe, and design geodatabase that may satisfy practical application of under - pipe through analyze the data of under - pipe and using technology of non - stitch integration

    本文通過對城市地下管線的分析，通過研究傳統的地下管線管理方法，並結合最新的gis技術一webgis提出了建立基於webgis的地下管線信息系統的必要性。並且通過對地下管管線數據的分析，利用空間數據與數據庫無縫集成技術設計出了滿足於實際應用的地下管線空間數據庫。
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