振幅降低 的英文怎麼說

中文拼音 [zhènfújiàngdī]
振幅降低 英文
lowering of amplitude
  • 振 : 動詞1. （搖動; 揮動） shake; flap; wield 2. （奮起） brace up; rise with force and spirit
  • 幅 : Ⅰ名詞1. （布帛、呢絨等的寬度） width of cloth 2. （泛指寬度） width; size 3. （姓氏） a surname Ⅱ量詞（用於布帛、呢絨、圖畫等）
  • 降 : 降動詞1. （投降） surrender; capitulate 2. （降伏） subdue; vanquish; tame
  • 降低 : reduce; cut down; abate; debase; drop; lower; lessening; reducing; reduction; depression; tarnish
  1. 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。
  2. According to basic principle and application experience of black light lamp, the trapping lamps were opened out using the principle of wave, color and taste to trap insect pests imago with the electric networks of frequently vibration and high voltages, it can trap many species and amounts of insect pests, reduce amounts of field ovum, greatly reduce insect pests density, save energy, have low lost, little harm to natural enemy and persons and livestock, have remarkable economic, ecological and social efficiency

    摘要借鑒黑光燈的基本原理和應用經驗，再配以頻振高壓電網觸殺的頻振式殺蟲燈，誘集的害蟲種類多、數量大，既大幅度降低了田間落卵量，又顯著減少了蟲口密度；節能省電，成本低；葉昆蟲天敵殺傷力較小，對人畜安全，不污染環境，具有顯著的經濟、生態和社會效益。
  3. The amplitude of the fundamental voltage drops across the filtering inductances ln are negligible as compared to the amplitude of the mains phase voltages, the voltages across cn therefore are assumed to be impressed and equal to the mains phase voltages

    當基本電壓從濾波電感降低到ln時，振幅與主電源相線電壓相比可以忽略不計，因此我們可以認為通過cn處的電壓被輸送並且等於主電源相線電壓。
  4. Analysis software. the analysis show : the gyroscope effect to the flywheel rotor ' s and the shaft ' s vibration character under high rotate speed should be considered. at this time, the system ' s normal frequency is the function of rotate speed ; the amplitude passing through the resonance field can be lowered obviously by improving the effective damping of the electro - magnetic bearing

    建立了高速旋轉狀態下，採用磁軸承作支撐的飛輪轉子和轉軸的動力學模型，給出了有限元法在此問題中的具體應用，並利用i - deas有限元分析軟體具體分析了飛輪系統的共振頻率、系統振型，以及對偏心激勵的響應，分析表明：對于高速旋轉的飛輪轉子和轉軸，應考慮陀螺效應對其動力學特性的影響，此時系統的固有頻率是轉速的函數；通過提高磁軸承的等效阻尼可顯著降低系統通過共振區域時的振幅。
  5. The scc has the following advantages : remarkably reducing the noisy pollution and the worker s labor intensity in construction, deducing the rough surface or segregation because of missing - vibration or excessive - vibration in conventional construction, resolving the quality - defect problems resulting from lacking - vibration in the section of complex shapes and densely - packed reinforcement area. at the same time, large of industrial solid waste such as fly ash and blast furnace slag is utilized in the proportioning of scc. it is helpful in comprehensive utilization of resource and environment protection, so the scc belongs to " green concrete ", it is a branch of hpc which will be developed in the future

    這種混凝土可以顯著降低混凝土施工中的噪音污染；大幅度減輕工人的勞動強度；減少傳統混凝土施工中因漏振或過振造成的麻面或離析；解決了配筋密集、結構復雜部位因振搗不足而造成的質量缺陷問題；同時，由於自密實混凝土在配製中，大量利用粉煤灰、高爐礦渣等工業固體廢棄物，有利於資源的綜合利用和生態環境的保護；從而被譽為「綠色混凝土」 ，是未來混凝土向高性能發展的方向之一。
  6. The proposed jtc greatly reduces the intensity and width of the strong dc component, sharpens the correlation peak, eliminates cross - correlations among each input target, and the conjugate cross - correlation between the reference and input targets at the same time. in order to calculate the discriminant probability of the objects, a simple but self - explainable statistic function was presented to show where the true object and false object occurred in the unknown input image sequence

    在此基礎上，論文提出了基於位相編碼振幅調制的畸變不變多目標識別聯合變換相關技術，即通過改變隨機位相模板的調制因子的大小來改善相關輸出的性能，一步消除了共軛相關項、輸入待識別圖像之間的互相關項，並大大降低了零級相關峰的能量和寬度。
  7. 2. the principle that cylinder misfire is diagnosed using torsional vibration harmonic analysis is illustrated by calculation of vectorsummation. calculation and experiment show : low harmonic will increase highly and main harmonic will decrease little when one cylinder is misfiring

    通過對扭振激勵的相對振幅矢量和的模擬和實驗研究，得到結論如下：如果柴油機發生單缸熄火故障，扭振低諧次幅值會大幅度增加，主簡諧會略有下降。
  8. When the frequency approaches zero, the factor approaches zero correspondingly ; 2 ) the amplitude of interaction factors changes with the incident angle of rayleigh waves and reaches maximum when is zero. moreover, with the increase of, the wave period shortens apparently ; ( 3 ) the amplitude of interaction factors decreases as the pile spacing increases and approaches to zero when the pile spacing is 15 ; 4 ) the amplitudes of interaction factors increase clearly with the increasing stiffness ratio of pile to soil ; 5 ) the lat eral seismic response of fixed - head pile groups is much smaller than that of free - head pile groups. moreover, the pile - group effects induced by rayleigh waves can be neglected ; 6 ) the lateral seismic response of piles at different location differs from each other

    得到了以下結論： 1 ）樁的相互作用因子隨頻率呈周期性變化，在振動頻率比較低的情況下，樁的橫向相互作用因子也較低，當頻率趨近於零時，相互作用因子也趨近於零； 2 ）樁的相互作用因子的幅值隨瑞利波入射角度的變化而變化，在= 0情況下幅值最大，且隨入射角度的增加，波動的周期明顯縮短； 3 ）樁的相互作用因子的幅值隨著樁與樁間距的增加而減小，至s d = 15時，樁的相互作用因子基本趨近於0 ； 4 ）在頻率比較低時，相互作用因子幅值隨樁土相對剛度比的增加而顯著增加； 5 ）樁頂固接可以有效地降低群樁的橫向地震響應幅值，由瑞利波產生的群樁效應可以忽略不計； 6 ）群樁中不同樁位的樁的橫向地震響應是不同的，每根樁所在的樁位對其橫向地震響應有很大的影響；刀樁數的增加並不能減小樁的橫向動力響應。
  9. The influence of various waterpower and configuration parameters on heat transfer is analysed and the rules of convective heat transfer coefficient and the ratio of heat transfer enhancement with mass flux are obtained. at the same time, we gain important results as below : as for resonance chamber with certain configuration, self - oscillation can be generated under suitable configuration and waterpower parameters. for the same configuration resonance chamber, the intensity of the self - oscillation is changed by the waterpower parameters

    當流量及壓差降低至一定程度時，共振腔還可能削弱換熱；加熱功率的提高會增加流體（水）的溫度，流體的粘度會隨著降低，這會減少對流體脈動的阻礙，使脈動衰減得更慢，而脈動幅度的增加會增強換熱，故加熱功率對有脈動的對流換熱是有影響的；自振腔產生的流體脈動頻率是自振腔固有頻率或其整數倍，流體脈動頻率過高或過低都不利於對流換熱，存在一有利於強化換熱的頻率范圍。
  10. Spiral baffle plate heat exchanger improved heat changing efficiency salient, reduced the press with great, control the damage from the shake, reduced the possibility of dirt subside, it has many merit

    摘要螺旋折流板換熱器顯著地提高了換熱效率，大幅度降低了壓力降，控制了振動造成的破壞，減少了污垢沉積的可能性，具有諸多優點。
  11. Compared with dcsk modulation, the fm - dcsk modulation changed the chaotic signals with random magnitude into the signal with constant magnitude and random frequency, thus the systemic noise performance is achieved

    將振幅隨機變化的混沌信號變為頻率隨機變化而振幅恆定的混沌fm信號，降低了系統的誤比特率。
  12. The way to eliminate chaos phenomenon through adjusting system parameters is indicated. the nonlinear dynamic behavior of journal bearing - rotor system in large parameter space is studied in numerical integral method and floquet theory and the first and second bifurcation behavior of nonlinear rotor system are discussed ; the concept is advanced that realizing the controllable nonlinear stiffness with sfd with the soft - nonlinear of sma in the super - elasticity state to make the vibration amplitude of system always be in the small solution state to reduce the vibration amplitude of rotor system

    運用數值積分方法結合floquet理論對滑動軸承-轉子系統的大參數范圍非線性動力學特性進行了全面的研究，詳細地討論了系統的一次和二次分岔行為； 5 ）提出了用形狀記憶合金在超彈性狀態下的軟非線性，結合擠壓油膜阻尼器實現系統剛性的非線性可控，降低系統在非定常狀態下的最大振幅的構想。
  13. Impulse is conducted unusually much if behavioral potential amplitude is reduced with ascendant rate, change by function of film of cardiac muscle cell, should stimulate a gender to drop, the joint between the cell decreases, impulse of as a result is conducted decelerate or block sluggish

    沖動傳導異常多由心肌細胞膜性能改變如動作電位振幅和上升速率降低，應激性下降，細胞間接合減少，以致沖動傳導減慢或阻滯。
  14. Based on the experiment concerned, it is found that the effective way to solve the problem is to decrease the amplitude of vibration and lower the effect from the vibrator on the surrounding sand layer under the condition that a certain exciting force can be guaranteed ; in which larger amount of water and higher water pressure are needed to saturate the sand layer, and then to make hole under the strengthened vibrating effect from the vibrator as well

    通過試驗，尋求到解決振沖施工造孔難的有效途徑是，在保證一定激振力的情況下，適當減少振幅，以降低振沖器對周圍砂層的影響；採用較大水量和水壓，使砂層飽和，並在加重振沖器的振動作用條件下造孔。
  15. No bad effect on concrete strength is found within a certain range of amplitude. the ultimate loads of vibration members are not lower than those of normal ones am, when vibration frequency is below 40hz and maximum vertical displacement is within 0. 2mm

    在一定的振幅范圍內，對混凝土強度沒有不利影響，當激振頻率在40hz以下，最大豎向位移振幅在0 . 2mm以內，受振與非振構件相比較，其破壞荷載值沒有降低。
  16. It is well known that end - plate connections have definite flexibility, which can increase damp, prolong period, and decease swing of structure. so it can reduce the damage, and is one of the best choices for resisting earthquake

    端板連接是一種具有一定柔性的連接形式，當框架結構採用這種節點時，可以增加結構的阻尼，延長結構自振周期，減小震幅，從而降低震害，是抗震的理想選擇之一。
  17. The strategy can make full use of upfc in system control and stability by optimizing the weights of each control function. by simulation, the integrated system dynamic performance is improved in both first and subsequent swing

    綜合一次控制與二次控制，提出了upfc的動態控制策略，模擬結果表明，動態控制策略能有效地降低系統的第一擺振幅，並增加系統阻尼。
  18. By vibration measurement and order proportion spectrum frequency analysis for high rotation speed reciprocating compressor pipe network, vibration causes are searched out, reducing vibration methods and treatment measure are established, after improvement, high vibration amplitude value is reduced greatly for pipe network

    摘要對高速往復壓縮機管網振動進行了測試和階比譜頻率分析，找出了振動原因，確定出實際可行的減振方法和處理措施，經過改造后的機組，原振動較大點幅值得到大幅度降低。
  19. Because of these characteristics, the variable stiffness sma bearing used in rotor system can be designed, and then the stiffness of system can be varied by active control technology when the rotate speed of system is near the critical rotate speed to reduce the maximum vibration amplitude of rotor system

    利用這些特性可以設計出用於轉子系統的可變剛度支承，通過結合主動控制技術，在臨界轉速附近改變系統剛度，從而降低系統在臨界轉速時的最大振幅。本文研究利用形狀記憶合金對轉子系統振動進行主動控制。
  20. Under the horizontal earthquake action and wind force, aim at " the pure frame structure with rectangle columns ", " the pure frame structure with special - shaped columns ", " the frame - truss structure with special - shaped columns " and " frame - shear wall structure with special - shaped columns ", earthquake action analysis was done by the spacial finite element method through the changes structural parameter. analyzing systematically " structure vibration mode ", " vibration period ", " structure lateral rigidity ", " seismic action force ", " seismic response force ", " floor seismic shear force ", " lateral horizontal displacement of structure " and " members internal force ". results indicate : ( 1 ) based on equal area, the special - shaped columns replaced the rectangle columns, the structural lateral rigidity enlarges, the lateral displacement minishes obviously, the earthquake response increase slightly, the biggest increasing amount of frame columns axis - compress ratio is smaller than 0. 08. the whole aseismic performance of structure has improved ; ( 2 ) when the section ' s length and section ' s thickness ratio of special - shaped columns is smaller than 3. 6, the structure benefits to resist seismic action ; ( 3 ) the angle of horizontal seismic action with the whole coordinate is 0 degree, structure earthquake response is bigger, belonging to a control factor of structure aseismic design ; ( 4 ) the frame - truss structure with special - shaped columns and the " a " - brace has the biggest lateral rigidity ; ( 5 ) the frame - shear wall structure with special - shaped columns have bigger lateral rigidity and smaller displacement, members internal force enlarged just rightly, have much superiority of resisting seismic action ; ( 6 ) in the higher seismic fortification criterion region ( 8 degree of seismic fortification intensity ), aseismic disadvantageous building site ( iii type site ), adopting special - shaped columns structure system, should reduce possibly the building ' s self - weight in order to reduce the earthquake response ; ( 7 ) the response spectrum method of computing seismic response and the time - history analysis method have similar analysis result

    西安理工大學碩士學位論文在水平地震作用下，並考慮風荷載組合，分別對「矩形柱純框架結構」 、 「異型柱純框架結構」 、 「異型柱框一析架結構」及「異型柱框-剪結構」等四種結構體系，通過改變結構參數，運用空間有限元方法，進行地震作用計算。系統地分析研究「結構振型」 、 「振動周期」 、 「結構側向剛度」 、 「結構地震反應力」 、 「樓層地震剪力」 、 「結構側向位移」 、 「層間位移角」 ，以及「構件內力」 。結果表明:在等面積原則下，異型柱代換矩形柱后，結構剛度增大，側向位移明顯減小，地震反應力略有增加，框架柱軸壓比最大增幅小於8 % ，結構整體抗震性能有所提高;當異型柱肢長肢厚比小於等於3 . 6時，結構有利於抗震;水平地震作用力與整體坐標夾角為0度時，結構地震作用效應較大，屬結構設計的控制因素之一;異型柱框一析架結構採用「人」字斜撐，側向剛度大於「八」字斜撐和「人一八」字混合斜撐;異型柱框一剪結構側向剛度大、位移小，構件內力增大適中，是一種抗震性能優越的結構體系:在抗震設防烈度較高地區（ 8度）和抗震不利的建築場地（ m類場地） ，採用異型柱結構體系時，應盡可能減輕結構自重，降低地震作用力;分別採用「振型分解反應譜」法和「時程分析」法進行地震作用計算，兩種方法所得結果基本一致。
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