自激現象 的英文怎麼說

中文拼音 [zìjīxiànxiàng]
自激現象 英文
self-excitation phenomena
  • 自 : Ⅰ代詞（自己） self; oneself; one s own Ⅱ副詞（自然;當然） certainly; of course; naturally; willin...
  • 激 : Ⅰ動詞1 （水因受到阻礙或震蕩而向上涌） swash; surge; dash 2 （冷水突然刺激身體使得病） fall ill fr...
  • 現 : Ⅰ名詞1 （現在; 此刻） present; now; current; existing 2 （現款） cash; ready money Ⅱ副詞（臨時; ...
  • 現象 : appearance （of things）; phenomenon
  1. But sometimes self - excited oscillations and noise may appear in hydraulic flapper - nozzle servo - valve if its construction is not selected very correctly. if self - excited oscillations and noise appear in hydraulic servo - valve, the performance of hydraulic control systems may lose stability

    因它具有非常快的響應速度，所以是目前應用最廣泛的伺服閥，但它也存在自激現象，容易產生自激噪聲和振蕩，嚴重影響伺服控制系統的穩定性。
  2. In this paper, according to the fully time compulsory education curriculum standards of chemistry ( experiment draft ) which requests that the students should be able to pose some valuable questions from their daily life or from their chemistry learning and express their questions clearly, the author discussed the inquiry value of the questions in chemistry instruction based on the theory of scientific epistemology, cognitive psychology and ability psychology. furthermore the parameters for measuring the students " questioning ability are also talked about from the perspectives of the motivations of questioning, the cognitive foundation, the value of the questions, the ability of posing questions by themselves and the ability of expressing their questions. after reading many literatures and interviewing some experienced chemistry teachers, the author proposed instructions strategies in cultivating the students " questioning ability in chemistry instruction from five aspects, they are : to stimulate the students to question ; to construct the cognitive foundation of questioning ; to augment the value of the questions ; to make the students pose their questions by themselves ; to cultivate the students " ability of expressing their questions

    本文在研究的過程中，採用了文獻閱讀和向任課教師訪談的方法，以《標準》中對「提出問題」要素的要求「能從日常現象或化學學習中，經過啟發或獨立地發現一些有探究價值的問題；能比較清楚地表述所發現的問題」為主線，運用科學認識論、認知心理學及能力心理學的相關理論作為理論基礎，結合中學生化學學習的特點，從問題的遷移價值、思維價值、能力培養價值和情感價值四方面深入探討了化學教學中問題的「探究價值」 ；通過對化學教學中學生「提出問題」能力的涵義及結構的分析，從提問動機、提問的認知基礎、所提問題的價值、提問的自主性和表達問題的能力五個方面建立了衡量學生「提出問題」能力的指標體系；在此基礎上相應從五方面提出了化學教學中學生「提出問題」能力培養的教學策略，分別是激發學生「提問」動機的策略、建構「提問」認知基礎的策略、提高問題價值的策略、提高學生「提問」自主性策略和培養學生「表達問題」能力的策略。
  3. In this technique, the particle density in the beam is very low ( typically 105 thickness ), so perturbations from collisions and inter - ionic fields are absent

    而且離子密度低（一般密度為10 ~ 5 cm ~ 3 ） ，因此不會出現自吸收、碰撞退激發以及離子間場效應等現象。
  4. Firstly, the airfoil ' s classic flutter ( at small attack angle ), stall flutter ( near the static stall angle ) and response ( at large attack angle ) are analyzed. it is found from the numerical results that " lock - in " will occur at certain freestream velocity range near the static stall angle, where the frequency of the vortex will be equal to the natural frequency and the flutter has the characteristic of self - induced oscillation. when the attack angle is far from the static stall angle, the vortex will have its own frequency, which differs from the natural frequency, and the flutter has the characteristic of forced oscillation

    首先研究了二維翼型的古典顫振（小攻角） 、失速顫振（失速攻角）和動力響應問題（大攻角） ，得到以下結論：在靜態失速攻角附近的一定來流速度范圍內，分離渦會發生頻率鎖定現象，分離流的頻率與固有頻率趨于相同，這時的振動呈現自激振動的特點；遠離失速攻角時分離流頻率則擺脫固有頻率的影響，此時的振動具有強迫振動的特點。
  5. Uygur a acid have the strong blanching effect, however will also destroy the skin surface the sebum membrane, this time the skin will receive factor stimulations and so on ultraviolet radiation, the skin can double protects oneself - - release more melanin, will initiate the more serious pigment precipitation phenomenon

    維a酸等成份都有較強的漂白效果，然而也會破壞皮膚表面的皮脂膜，此時皮膚受到紫外線輻射等因素刺激，皮膚會加倍自我保護? ?釋放更多黑色素，引發出更嚴重的色素沉澱現象。
  6. A series of activation, expression and regulation of genes is involved in the process, it is not a kind of self - injury in pathology condition but an active death process to pursuit a better accommodation to living environment

    它涉及一系列基因的激活、表達以及調控等作用；它並不是病理條件下自體損傷的一種現象，而是為更好地適應生存環境而主動爭取的一種死亡過程。
  7. Furthermore, the fiber phase - conjugator has been used in ld - pumped solid - state laser system with four - pass configuration to suppress the self - oscillating ( so ) phenomena caused by amplified spontaneous emitting ( ase ) in laser amplifier. when using 200 m fiber, the energy of so has been successfully decreased from 12mj to below the precision of energy - detector

    將光纖相位共軛鏡應用於四通放大結構中，有效抑制了放大級中的放大自發輻射引起的自激振蕩現象，使得自激振蕩輸出能量從12mj降低到能量計最小精度以下。
  8. In the presence of hx, oocyte maturation to mil and the extrusion of polar body were highly synchronized, the oocytes matured to mil stage were activated in higher rates than oocytes matured without hx, and those oocytes matured exposed to hx for all the 24h showed a high rate ( 55 % ) of spontaneous activation

    Hx存在情況下成熟到m期的卵母細胞排出第一極體時同步化程度高，其孤雌活化能力高於正常成熟卵母細胞， hx作用24h組出現自發激活現象（自發活化比率55 ） 。
  9. At same time, author suggests to change cavitation factor to important operation condition during pressure fluctuation test so to avoid producing the phenomenon of cavitation stimulus in the prototype operation

    同時，建議針對水輪機的重要運行工況，增加不同空化系數下的壓力脈動試驗，以避免在真機運行時可能產生「空化自激」現象，確保原型機組的安全運行。
  10. A dfdl model including gain saturation effects is developed and this model is used to study the fluctuation of the pulse width theoretically, which is identical to the experiments. in order for ps pulse amplification, the saturation fluence for krf at 10 ps and gain of the discharge krf laser are monitored. 4

    開展了10pskrf激光在空氣中的傳輸實驗研究，計算了自導引區內的閾值光強，觀測到光束自聚焦和自導引現象，測量了自導引區域內的等離子體密度，並對激光脈沖的傳輸演化進行了分析。
  11. Meanwhile, on the base of the related art origin of theory and play theory, i demonstrate the children art education, and consider the art activity which is of shape, inner recognition and operational pleasure is the best selection. the children art education derive from the natural situation, as a result of inner cognitive psychology adjustment and sign movement to the stimulus from the outer environment. satisfied with the physical need, the children go into play situation consciously or unconsciously, in means of tools, materials and symbols to express the objective reality, will and ideology

    幼兒美術的發生是自然狀態中，幼兒在外界事物刺激下，通過認知心理的內部調適，支配肢體運動的結果；幼兒美術是在滿足生理需要，在知覺的基礎上、外界事物刺激下、輕松愉悅的氛圍中，幼兒有意無意地進入游戲狀態，藉助工具、材料、符號等自然手段，反映客觀現實、願望和自我意象。
  12. Here phenomena include also the excitation-response relationships of natural materials for which ideal material serve as models.

    這里，現象也包括著以理想物質為其模型的自然物質的激發反應關系。
  13. The exhibition, through metaphoric comparisons to natural phenomena in the ecosystem, is intended to encourage and conceive more possibility and diversity of modern art creations

    潮間帶藝術偵測站就是要借喻生態界的自然現象，來刺激並孕育當代藝術創作更多的可能性與多樣性。
  14. Take a photograph of devices hav developed from dante spectrometer to soft x - ray str eak camera ( at ~ 20ps ) in which one has a chance to investigate a good many plasma phenomenon. measurement of the time - varying spectral shape of the soft x - ray continuum from laser - fusion targets can provide a detailed dynamical record of x - ray processes important to the understanding of thermal conditions in such experiments

    自從六十年代末到七十年代初以來，應激光聚變實驗研究的需要，軟x光時間分辨診斷技術有了長足的發展，攝譜裝置由以前的dante譜儀到現在的軟x光條線相機， （ t 20ps ） ，通過這些裝置，可以有機會驗證諸多等離子體現象。
  15. In recent years, the vegetation was destroyed severely in north of china with population explosion. the quality of atmosphere in beijing, the capital of china, was depressed seriously because of the sand storm

    近些年來，由於人口激增，自然植被遭到嚴重破壞，我國北方地區沙化日漸嚴重，北京作為我國的首都，由於沙化問題引起的沙塵暴等現象嚴重困擾著人民的正常生活，大大降低了環境質量。
  16. Full quanta theory was used in analysis the working principle of laser, educed the photon states of single pattern radiate in two energy - step system, and simulated the establishment of laser mode and statistical distribute of photon. according to elf consistent equations of rlg ; build the simulated program with labwindows / cvi and do some simulation experiments, the result of simulation matched the theory perfect perfectly and conform to the experiments, the locked - in and pattern competition coursed the periodic light intensity

    在激光陀螺自洽場方程組的基礎上，運用labwindows / cvi軟體建立了靈活方便的激光陀螺模擬平臺，並進行模擬試驗，模擬試驗結果與理論分析很好的相符合，且能夠較好地說明陀螺試驗現象，即在閉鎖閾值附近，由於閉鎖效應和模競爭相互影響，使得激光腔中兩行波相互關聯，光強差隨時間呈周期性變化。
  17. Secondly, this paper develops a coupled model between ice and structure after knowing the constitutive behavior of sea ice ; focus on the effects of wing cracks to the coupled vibration. and the stability of steady state vibration is also discussed qualitatively

    把冰激直立結構穩態振動定性為由於海冰的非線性力學性質導致的非線性振動，證實了穩態自激現象的存在，提出了海冰的微裂紋損傷行為在穩態自激振動中起到控製作用。
  18. However, by comparison with flap nozzle servo valve which has been used widely and popularly by now, the torque motor of jet pipe servo valve has a larger rotary inertia. this causes low natural frequency of servo valve, and thus the response speed of jet pipe servo valve is slow. moreover, the jet pipe of servo valve has large flexibility, and it is easy to excite oscillations and noise in the valve, which is named self - excited oscillations and noise

    然而與目前普遍使用的噴嘴擋板伺服閥相比，射流管伺服閥的銜鐵組件轉動慣量大，導致力矩馬達部分固有頻率低，從而響應速度慢，此外，射流管供油管柔性大，容易產生自激現象，這些缺點都使得射流管伺服閥的動態特性差，從而影響了它的工作性能。
  19. The influence of the blowing factors to the flutter and the lift coefficient is analyzed. secondly, the self - induced vibration of seals are analyzed by fluid - structure coupling numerical method. the self - induced oscillation of the seals will occur at large rotational speed, however, this phenomenon ca n ' t be simulated with the

    採用本文的流固耦合方法成功地捕捉到頻率鎖定的現象，且發現隨著轉速的提高，固有頻率也增大，從而證明高轉速下密封轉子會發生自激振動，傳統的剛度阻尼方法對此是無法解釋的。
  20. There is some overlap but, in essence, these are separate phenomena, with their own emotional and motivational systems, and accompanying chemicals

    三種滋味的愛情雖有一些重疊，但本質上是截然不同的現象，並且具有各自的情緒和激發系統，以及相伴的體內化學物質。
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