frequency of contact 中文意思是什麼
frequency of contact
解釋
接觸頻率量表-
First, the theory of fretting wear and studies on fretting fatigue were introduced and the parametric method was used in the process of creating the model of dovetail joints in ug software. the elastic contact problem is analyzed in finite element method ( fem ) and is used to the parameters " distribution and contact stress of the joint are obtained on the base of ansys code. with the effect factor of load frequency, the prediction method of fretting fatigue life of dovetail joint under low and high / low cycle complex load is proposed
本文介紹了微動損傷的機理和微動疲勞壽命的研究方法；利用ug軟體對燕尾榫聯接結構創建了參數化實體模型；基於ansys軟體平臺求解彈性接觸問題，獲得了榫聯接結構接觸應力及接觸狀態量的分佈；在已有微動疲勞壽命預測模型的基礎上，引入載荷頻率影響因子，對低周、高低周復合載荷作用下的燕尾榫聯接結構進行了微動疲勞壽命的預測，與試驗結果對比表明採用本文提出的方法預測榫聯接結構的微動疲勞壽命是有效的。 -
Schottky barrier diode is a kind of majority carrier device, using the contact barrier formed between metal and semiconductor to work. it has the advantages of low turn - on voltage and high response frequency, compared with pn junction diodes
肖特基二極體是利用金屬與半導體之間接觸勢壘進行工作的一種多數載流子器件，與普通的pn結二極體相比，它具有正向導通電壓低，響應速度快等優良特性。 -
The empirical analysis, using probit model, showed that the extension efficiency of the technique was obviously affected by following factors : income and cost, yield increase, farmers " age and education, non - agricultural income, farmer ' s social status, distance from town, frequency of farmers " contact with media and agricultural technicians
運用probit模型對超高茬麥田套稻技術推廣的影響因素進行分析，結果顯示畝增收節本、畝增產量、戶主年齡、戶主受教育時間、非農收入、是否幹部、離鎮距離、媒介頻率、與農技人員接觸次數對該技術的推廣有顯著影響。 -
Principal conclusions were drawn as the following : the non compatibility of pressure or velocity of the gas on both sides of the contact surface is the cause of the formation of shock wave ; the heating effect of reflective shock wave to driving gas during charging or exhausting process is the internal mechanism of peak oscillating effect, and all the factors that influence the formation and the running of the shock wave will influence the peak oscillating frequency, cooling effect
主要結論如下：熱分離機內激波形成的原因是射氣瞬間接觸面兩側壓力和速度不相容；峰值振蕩效應的內在機制為反射激波對充氣階段的驅動氣或低溫排氣的加熱，凡是影響激波形成及運動的因素都將對峰值振蕩頻率、冷效應及熱效應產生影響；當充、排氣時間比為0 . 1763時，最佳射流激勵頻率出現在高階峰值振蕩頻率上。 -
The distribution of magnetic induction in rectangular soft - contact mold during electromagnetic continuous casting ( emcc ) was investigated considering the electric frequency
摘要研究了在電磁軟接觸連鑄過程中，電源輸入頻率的變化對矩形電磁軟接觸結晶器內的磁感應強度分佈規律和彎月面變化情況的影響。 -
The new technology of non - contact life - parameter detection is relative to that of the normal contact one, which uses microwave beams to illuminate the human subject, whose reflected wave will be modulated by the surface movement resulting from the physical activity. by this way, some parameters of the reflected wave, such as frequency and phase will be changed. if these changes can be detected, the life parameters such as respiration rate and heartbeat rate will be extracted from those changes
非接觸生命參數檢測是相對于常規的接觸式檢測而言的一種新技術，它利用微波束照射人體，其回波信號被人體生命活動引起的體表微動所調制，使得回波信號的某些參數（如頻率、相位）發生改變，檢測到這些變化就能從中提取出人體的生命參數（如呼吸或心跳） 。 -
Therefore, pulls out delivers the frequency to be higher, with are more in the unit interval / unit time internal contact ' s opportunity, this may enable the main center in unit of time to obtain more information, is easier the excitable pleasant sensation response
因此，抽送頻率越高，與在單位時間內接觸的機會就越多，這就可以使性中樞在單位時間內得到更多的信息，就更容易激發性快感反應。 -
At last, in according to the experiment results, the interpretation of the mechanism of the slip phenomenon of prepressing - contact spring - damping system was given in this dissertation. further more, the relationship among the limit frequency, the value of prepressing, excitation frequency, the amplitude of excitation and the materiel parameter was analyzed. base on the theory analysis the limit frequency formula was given, and the contact - slip condition for engineering application was concluded
最後根據理論研究與試驗分析的結果，分析預緊接觸式彈簧阻尼系統產生滑移現象的機理以及共振峰值漂移現象的理論解釋，並通過定性分析接觸分離時的頻率與預緊量、激勵頻率、激勵力幅值以及墊層的材料參數之間的關系，提出能定量描述系統出現滑移現象的極限頻率公式，總結了預緊接觸式結構始終保持接觸的條件。 -
Third, a solid lubricant embedded 40cr - ptfe bearing and a bronze c86300 - ptfe bearing were prepared. the comparatively tribological tests were performed in an oscillating sliding tribotester. the conditions were a contact mean pressure of 80 mpa, an oscillating frequency of 0. 13 hz and relative humidity of
選擇40cr - ptfe鑲嵌型軸承與高強銅合金c86300 - ptfe鑲嵌型軸承在nh - 100型重載擺動摩擦試驗機上進行對比摩擦試驗，試驗條件為:承載壓強80mpa 、擺動頻率為0 . 13hz以及相對濕度為（ 60 3 ） % 。 -
Actually to ensure the effect of soft - contact continuous casting, the power input should be increased to compensate the decrease in exciting current if the frequency increases
在實際生產中，如果需要提高電源輸入頻率，則應該同時適當的增大電源功率來彌補激勵電流的減小，以保證軟接觸效果。 -
Magnetoelectric sensor is a kind of non - contact sensor and has some useful characteristics, such as non - contact, high response frequency, low power waste, high reliability, long life - span and etc
磁電傳感器是一種非接觸式傳感器，它具有無觸點、無開關瞬態抖動、響應頻率高、低功耗、高可靠性和長壽命等特點。 -
The design and frequency control of the contact - less parallel resonant power supply system
並聯諧振型非接觸供電平臺的頻率控制與設計 -
Provided a new method used to detect non - contact life - parameter signals which was based on fft frequency domain signal integration. 2. built up an new algorithm of life identification for radar non - contact life - parameter detecting and the application software of the wounded detecting lifeform identification is developed
提出了基於fft頻域積累的方法進行非接觸生命參數信號分析與檢測； 2 、首次提出了一套雷達式非接觸生命參數檢測的生命體識別演算法，並研製了相應的軟體系統。 -
With the development of modern industry and technology, some conveying and manipulating operations in non - contact mode need the suspension technology in the fields of guiding system, material processing, micro - electronics and semi - conductor industry and so on. therefore, it is of great importance to develop the suspension technique. there have been some conventional suspension methods at present, among them, magnetic levitation, acoustic levitation, aerodynamic levitation, optical levitation, radio - frequency levitation, electric levitation and super - conducting levitation
隨著現代工業與科學技術的發展，在精密機械工業、半導體工業、航空航天工業、交通與運輸業以及空間材料科學、微電子學和軍事科學等許多領域，需要採用懸浮技術對特定目標如精密元器件、光盤（ cd ） 、液晶片（ lcd ） 、硅基片（ wafer ） 、導航陀螺乃至列車等實現非接觸式的操作或輸運，因此，懸浮技術的發展具有重要的理論意義和實用價值。 -
Connectors, receptacle, electrical, coaxial, radio frequency series sma, pin contact flange mounted for strip of microstrip transmission line, detail specification for
Sma系列帶狀線或微帶傳輸線用插針接觸件法蘭安裝射頻同軸插座連接器.詳細規范 -
This work was supported by the state science and technology ministry of the p. r. china under the contact no. g20000683 - 06, and by the national natural science foundation of p. r. china under grant no. 60046001. recently, gallium nitride ( gan ) as a wide band gap semiconductor has attracted more and more attention and advanced rapidly, mainly due to its promising applications in short - wave light - emitting devices, photodetectors, as well as anti - radiation, high frequency and high power electronic devices
本碩士論文是基於國家科技部重點基礎研究發展規劃項目（ 973項目）子課題「硅基寬帶隙異質結構材料生長及器件研究」 （ 2000年10月- 2005年9月， no . g20000683 - 06 ）和國家自然科學基金（ no . 60046001 ）的一部分研究工作。 -
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 -
The main context of this dissertation focuses on three aspects. the author simulates and optimizes the helix - slow wave structure by using the high frequency electromagnetism code cst mws, gets the results which the shape of the supports of helix impacts on the dispersion characteristic and the coupling impedance. then using ansys software, the author analyzes the thermal contact resistant will impact the thermal characteristic of the helix - slow wave structure and get the temperature of the helix slow - wave structure
本論文主要包括以下三方面的內容:作者使用cstmws軟體對螺旋線慢波結構的夾持桿形狀進行了優化;分析了夾持桿形狀對慢波結構色散和耦合阻抗的影響，同時還分析了接觸熱阻對螺旋線慢波結構散熱性能的影響，找到了兼顧螺旋線慢波結構電特性和散熱性能的夾持桿形狀。 -
Mems switches based on metal - metal contact are useful in a variety of power management information processing and communication systems because their on resistance is lower than that of semiconductor switches and their off resistance and transmission frequency are higher than that of semiconductor switches
在自動測試、控制系統、通信系統的信號通路等領域有著廣泛應用潛力，同時， mems開關是微機械技術中的一類有代表性的結構，是很多微機械器件的基礎。
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