自由周期 的英文怎麼說
中文拼音 [zìyóuzhōuqī]
自由周期
英文
free period-
Some conclusions are drawn : 1 ) effect of inertial force from superstructures on the lateral seismic response of single pile can not be ignored ; 2 ) the lateral seismic response of single pile induced by far - field earthquake are mainly affected by acceleration mass of superstructure > site eigenperiod. it increases with the increment of accele ration and mass of superstructure. as the site characteristic frequency approaches the self - oscillation frequency of the pile, sympathetic vibration occurs and the value of lateral seismic response reaches maximum ; 3 ) as the stiffness ratio of pile to soil increase, the relative displacement of pile to soil increases ; 4 ) the lateral seismic response of fixed - head pile is much smaller than that of free - head pile
將其解析解與具體的的抗震設防烈度和場地特徵周期結合起來，計算分析了成層地基中單樁的橫向地震響應，得到了以下結論： 1 ）上部結構慣性力對樁的橫向地震響應的影響不可忽略； 2 ）成層地基中的單樁的橫向地震響應主要受地震基本加速度、場地特徵周期、上部結構質量的影響，隨地震基本加速度、上部結構質量的增大而增大；場地特徵頻率越接近樁基自振頻率，樁基地震響應越大，等於自振頻率時，由於發生共振現象，樁基響應幅值最大； 3 ）樁土剛度比越大，樁土之間的相對位移的幅值越大； 4 ）樁頂固接的連接方式，可以有效地降低地震時單樁的橫向地震響應。Note that the data from the provider is passed during the prerendering phase of the page and control cycle, so you should plan to process the data and update any logic in the consumer after prerendering is complete
注意，由於是在頁和控制項周期的預呈現階段傳遞來自提供者的數據，因此在預呈現完成後您應計劃在使用者中處理數據和更新任何邏輯。To monitor the quantity, direction, and duration of blue light signals, higher plants rely on a sophisticated photosensory system consisting of three blue - light receptors - cryptochrome 1, cryptochrome 2 and phototropin - and various signal transduction factors
摘要植物具備一套復雜的由3種藍光受體和多種信號轉導下游組分組成的藍光感應系統，通過感受光照強度、光的方向和光周期，調節自身對藍光的應答。Abstract : we have studied the spontaneous emission from a three - level atom with an external - driving field in a photonic crystal. as a result of quantum interference and photon localization, the population in the two upper levels displays quasi - oscillatory oroscillatory behavior. this depends on the initial atomic state and the relative positions of the two upper levels from the forbidden gap. the intensity and the phase of the external field can affect spontaneous emission from the atom. the properties are different from a three - level atom either in vacuum or in aphotonic crystal without an external driving field
文摘:討論了在雙光子驅動場作用下，三能級原子在光子晶體中的自發發射問題.由於量子干涉和光的局域化作用，兩個上能級中的占據數將具有周期振蕩或準周期振蕩的性質，這不僅依賴于兩個上能級與禁帶的相對位置，同時也依賴于原子的初始狀態，而且還與驅動場的強度、驅動場的入射位相有關.這些性質既與真空中帶有驅動場的原子的自發發射性質不同，也有別于無驅動場作用下光子晶體中三能級原子的自發發射性質It is the main purpose of this paper to calculate the energy splitting of ground state and excited states induced by thermally assisted quantum tunneling. first, a brief introduction is given for the theoretical and experimental studies on the magnetic macroscopic quantum effects. then, spin tunneling in a uniaxial ferromagnetic particle in transverse magnetic field is converted to a pseudoparticle moving in effective double - well potential with the help of the effective potential description of quantum spin systems developed by ulyanov and zaslavskii. finally using the periodic instanton method we evaluate the transition amplitude, energy shift and prefactor of wkb exponential and the energy splitting of ground state and the tunneling rate for excited states induced by thermally assisted quantum tunneling are obtained
文章首先對磁性宏觀量子效應的理論和實驗方面作了簡單介紹，然後藉助于ulyanov和zaslavskii發展的一種等效勢描述方法，把外磁場沿難磁化軸方向時的自旋隧穿約化成在等效雙勢阱中運動的粒子，利用瞬子方法給出基態能級劈裂，最後利用周期瞬子方法分別計算了隧穿幅、能級移動以及wkb前因子，從而給出由於熱助量子隧穿引起的激發態的隧穿率。As the salvage of perished products is almost zero, and the demand is uncertainty, retailers usually set the product ' s price dynamically to influence the demand
由於需求的不確定性，短生命周期產品的零售商們常常通過動態定價的方式來影響需求，實現自身收益最大化。This is a natural cycle calendar that tracks moon and menstral cyles, unlike our erroronous gregorian calendar that was altered to suit pope gregories wars
這是自然周期歷法，追隨月亮和月經周期，不像我們被扭曲成符合羅馬教皇戰爭的錯誤的格里高利歷（注：即陽歷，由古羅馬教皇製作，最初用於歐洲） 。Due to the existence of high viscosity in strange matter, strange stars can reach much shorter period than neutron stars
由於奇異星有很高的粘度，它的自轉周期會比中子星短得多。The states of the system and their differential signals are obtained on time by tracking differentiator, and the influence induced by nonlinear periodic load disturbance is compensated adaptively
電力系統混沌振蕩狀態和它的微分信號由微分跟隨器實時提取，並通過微分跟隨器對非線性周期性負荷擾動的影響進行自適應補償。This, on the one hand, greatly obstructs the automation, and on the other, makes it very hard for the green hand to master. as a result, the technique is now meeting with the problem of handing down. the key to the problem is to quantify in a pragmatic way the effect that different factors have on plate shaping
隨著科技的發展，由於水火彎板加工的經驗性及手工操作，使得外板彎曲成形加工成為影響船體建造周期與實現自動化的瓶頸；而且隨著老工人的退休，而青年工人掌握這項工藝又需相當長的時間，導致水火彎板技術青黃不接的現象日趨嚴重。Hull of this machine is designed in line with flow type of whirlwind dust catcher : to separate dust with large size granule firstly, then remove fine dust with filtering bag. the revolved nozzle will burst back - blow current from top to lower place periodically to force the bag to expand, shake off dust on the filtering bag which enhances service life of filtering bag and assuring dust removing effect
該機機殼按旋風除塵器流型設計，將大顆粒粉塵首先分離出來，細微粉塵由濾袋清除旋噴管周期性地向濾袋自上而下的噴出反吹氣流，迫使濾袋膨脹振動抖落濾袋上的積塵，提高了濾袋壽命，保證除塵效果Design of secondary wiring is important but time - consuming and laborious. it is usually done by designers under the help of some un - intelligent software such as autocad, which results in long period and low efficiency. therefore, studying methods and developing system of generating secondary wiring automatically becomes significant and valuable
二次接線設計是一項重要且費時又費力的工作，長期以來都是由設計人員藉助不具備自動化設計功能的輔助設計軟體（如autocad ）完成設計任務，設計周期長、設計效率低。To the advanced consumer, since the making system supplies a source program file, hence, even though programmer would n ' t make the multi - media courseware be based on the making system, yet some control modules supplied by the making system such as some modules that adjust the image, voice, controls of drawing, and some that establish the teaching material composition in the way of the data bank and so on, can be either directly transplanted or after a bit alternation then transplanted to someone ' s own multi - medium works, thereby it simplifies the multi - medium teaching material making process, cuts down the making cycle and improves its work efficiency
對于高級用戶而言，由於製作系統提供的是一個源程序文件，因此，開發者即使不是基於製作系統來製作多媒體課件的，但系統提供的一些控制模塊如對影像、聲音、圖紙的控制，用數據庫方式來創建教材結構等，都可以直接移植或稍作修改後移植到自己所開發的多媒體教材中去，從而簡化了多媒體教材的製作過程，縮短了製作周期，提高了工作效率。The change of natural frequency and lateral forces of the structure due to plasticity of the structure are taken into account
文中考慮了結構進入塑性後由于剛度改變造成的自振周期和側向力的變化。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。Traditional inertial mechanized - platform uses velocities to damp the system attitude to improve the precision of attitude, when the system acceleration is small. referring to the idea, this paper designeda damp kalman filter in strap - down attitude heading reference system ( ahrs ). the new method makes use of 3 - d accelerometer ' s measurements to estimate the system attitude, which is measured to compensate attitude errors. because the acceleration affected the precision of fiher directly, the fuzzy adaptive system was presented. the fuzzy logic inputs are three accelerations and the output is to control the measurement noise covariance matrix. simulations and experimental results prove that the damp algorithm can damp most of schuler oscillation and foucauh oscillation, so that to assure the filter convergence and efficiently improve the precision of strap - down ahrs
在系統機動性不強的情況下，傳統的平臺內阻尼演算法將系統本身的速度信息通過阻尼網路加到系統中，達到提高姿態角精度的目的.將這種平臺內阻尼的思想引入到捷聯慣性航姿系統中，在系統加速度較小的情況下，利用加速度計的輸出估計系統姿態角，通過卡爾曼濾波的形式補償系統姿態誤差.由於加速度的大小直接影響濾波器精度，本文設計了模糊自適應卡爾曼濾波演算法，根據三軸加速度計的輸出調整內阻尼量測誤差方差陣，從而避免了濾波器的發散.模擬和實驗驗證，內阻尼演算法可明顯抑制舒勒周期振蕩和傅科周期振蕩，避免了系統姿態漂移，有效提高了捷聯慣性航姿系統的精度First, we think periodicity and weakening surge of the nonlinear waveform is caused by self - excitation of the circuit. the electric field thresholds ( et ) and maintenance field ( es ) of lock - on are modulated by the ac electric field ; the nonlinear waveform became two main modes of trans - electron oscillator, namely delay polar domain mode and quenched dipole domain mode
指出非線性波形周期性的減幅振蕩，是由於光電導開關所處電路自激振蕩形成的交流場對偶極疇的閾值電場e _ t和維持電場e _ s進行控制，從而形成轉移電子振蕩器的兩種主要工作模式：延遲偶極疇模式和猝滅偶極疇模式。The results show that, when and 02 are in various intervals, the trajectories for systems ( i ) are either ultimately periodic or convergent to an equilibrium. the difference between system ( i ) and system ( ii ) only lies on the sign of self - feedback coefficient, but their asymptotic behavior of trajectories are much different. for the given initial value, the solutions for system ( ii ) all converge to the certain equilibrium
結果表明：當_ 1和_ 2在不同的取值范圍內，系統（ ）的解或收斂到某一平衡點，或無限逼近於某個周期解，且部分_ 1 ， _ 2下的極限環全局穩定；系統（ ）與系統（ ）的區別僅在於自反饋系數的符號為負，但由此其解軌線的極限性態發生了很大的變化，對于確定的初值，系統（ ）的解均收斂到確定的平衡點。The study indicates that the base - isolated structure has reduced the horizontal stiffness and enlarges the self - vibration period. thus, makes its frequency far away from occur with the place earthquaking. therefore, these will reduce the horizontal earthquake effect
理論分析研究表明：基礎隔震結構由於在房屋的基礎頂面設置柔性的橡膠墊，從而降低了隔震結構的水平剛度，增大了結構的自振周期，使其遠離與場地發生共振的頻率段，因此也就降低了結構的水平地震作用。Due to their large masses, their rotational periods are very regular. we can specify the periods of some pulsars up to more than ten decimal places. this allows us to study the small disturbances around the star
由於中子星非常沉重，所以它的自轉周期非常規律，有些中子星的脈沖周期可以準確至小數后十個位，因此，就算中子星出現輕微的異動，天文學家亦可以觀察得到。分享友人