轉差能量 的英文怎麼說
中文拼音 [zhuǎnchānéngliáng]
轉差能量
英文
slip energy-
This paper supplied a new way through variable frequency variable speed ( vfvs ) to change its output flow rate and adding a constant - pressure - drop valve, which could solve the defects in hydraulic pressure servo control system, such as low efficiency in control system, short life, poor ability in resisting pollution, low efficiency in driving system and flow rate, pressure pulse. and this way was proved to be effective
本論文針對傳統伺服控制系統效率不高、元件壽命短、抗污染能力差、驅動系統效率低、存在流量及壓力脈動等缺陷，利用先進的交流變頻調速技術改變液壓泵轉速的容積調速新方法，提出了在液壓系統中加一個定差減壓閥的新思路，較好地解決了液壓伺服系統存在的上述問題。Section two the evaluation of biocompatibility of the acellular dermal matrix by the method of cell culture. the new born rat ' s epdermic cells were cultured with the acellular dermal matrix together as experiment group, while the epdermic cell were cultured simply as control. 24 hours later, under the invert microscope, the epidermic cells anchored well and transparent flat cells were observed in both groups. 7 days later, both cultured cells were taked out and fixed in 95 % ethanol, stained with hematoxylin and were observed under light microscope. many cleaved cells were observed in both groups. during cell culture, no pathogenic microganism was observed. so we considered the acellular dermal matrix was aseptic and had good biocompatibility. section three subdermal implantation of the acellular dermal matrix. 24 rats were used in the experiments. a piece of acellular dermal matrix ( 1. 5 x 1. 5cm2 ) was implanted beneath the dorsum skin flaps of each rat, 1 week, 2 weeks, 3 weeks and 4 weeks after implantation, 6 pieces of acellular dermal matrix were harvested and the size of implanted acellular dermal matrix were measured, the sections were used for he staining and observed under light microscope. the result were as folio wing : 1 - 2 weeks after implantation, the acellular dermal matrix began to adhere to the tissue around and turned red gradually ; 3 - 4weeks after implantation, the acellular dermal matrix adhered closely to the tissue around and could be recognized easily, 1 - 3 weeks after implantation, the size of implanted acellular dermal matrix had no statistical difference ( p > 0. 05 ). 4 weeks after implantation implanted acellular dermal matrix contracted ( p < 0. 05 ). under light microscope, l - 2weeks after implantation, the fibroblast cells infiltrated the acellular dermal matrix and a small amount endothelial cells of vessel and lympho - histiocytic cells infiltrated the acellular dermal matrix. 3 - 4 weeks after implantation, infiltrating blood vessels were evident. so we think that the acellular dermal matrix had low immunological reactions and could induce the infiltration of fibroblast macrophage cell and the endothelial cells of vessel
結果如下：皮下包埋卜周者，無細胞真皮基質漸與周圍組織粘附，顏色由蒼白轉紅；皮下包埋3周者，無細胞真皮基質與周圍組織緊密枯附，盾晰葉辯；術后卜周，包埋的基質面積變化較包埋前無統計學差異o川0引，術后4周包埋的無細胞真皮基質面積較包埋前縮小j刃刀5 ） 。光鏡下術后卜周，宿主的淋巳組織細胞、成纖維細胞浸入生長，釉附在膠原纖維上，少量血管內皮細胞浸入基質；術后34周，無細胞真皮基質內較多的血管形成，故可認為無細胞真皮基質免疫原性低，能誘導宿主的成纖維細胞、巨噬細胞浸入生長，為一種新型的真皮替代物。第四部分無細胞真皮基質與自體斷層皮片復合移棺的研究， sd大鼠10隻，在其背部卜方造成全厚皮膚缺損的創面Because along with the liberalization of china ’ s capital account, once the economic developing speed slows down, capital account and current account ’ s surpluses reverse to deficits, the appreciation expect of renminbi will be changed. at the same time, the high quota savings in china ’ s banks will also bring us inflation pressure, inapparent currency substitution may be turn into visible currency substitution. also, the great deal of currency substitution inclining may convert into real currency substitution because of the vulnerable financial system
但另一方面，它又離我們那麼近，因為隨著中國資本賬戶開放的逐漸深入，一旦我國經濟不能保持高速發展，資本賬戶和經常賬戶雙順差現象出現逆轉，人民幣升值的預期將被改變，而我國高額的人民幣儲蓄也將給我國帶來通脹壓力，隱性的貨幣替代將有轉為顯性貨幣替代的可能，由於金融體系脆弱性所造成的大量貨幣替代傾向也很可能轉化為真實的貨幣替代。The results show a few grooves appear on the worn surface of the composites which contain 10 phr nano - al2o3 there are a great many grooves on the worn surface of the composites containing 20 phr. in addition the deeper cracks also appear. this shows that excess nano - al2o3 particles ca n ' t improve wear properties of pa6 ' s. the proper content of nano - al2o3 in the matrix can enable the molecular chains of pa6 to produce closed joints which resemble the physical crosslinking
尼龍6 / a12o :復合材料的加工性能研究表明:隨著納米a12o3的加入，復合材料的熔體流動速率下降，納米a12o3含量越大，下降越明顯，即隊6 / a12o3納米復合材料的加工性能越差;隨著納米a12o3的加入，復合材料的轉矩和塑化時間都增加，當含量小於巧phr時，隊6復合材料的轉矩增加幅度不大，當含量超過15phr后，轉矩急劇升高。Aiming at the study actuality of fan performance monitoring system and analysis of fan performance curve changes affected by inlet - box and the different fixed - angles of guide blades in the course of installation, a fan flow monitoring model based on rbfnn in whole flow zone was established in this thesis. in the model, the method of no throttle and fan performance curve were used as basis. and on the basis of that model, fan performance curves of 4 - 73no. 8d were approached with experimental data of different speed, different opening - angles of guide blade and different resistance of pipeline, the precision and the error law of model were studied
本文針對電站風機性能監測系統研究較少的現狀，在實驗的基礎上分析了現場加裝進氣箱和由於安裝造成的導流器葉片開度不一致對風機性能曲線的影響，並在此基礎上採用無節流方法測量流量，以風機調節性能曲線為依據，建立了基於徑向基函數（ rbf ）神經網路的風機流量全程監測模型；以實驗室4 - 73no . 8d離心風機為研究對象，探討了rbf神經網路差壓模型在變轉速、變導流器開度和變管網阻力等工況下的應用精度和誤差分佈規律；最後用visualc + +語言開發了風機性能在線監測系統。Further acceleration only compounds the push, as weight shifts back to the rear drive wheels, off of the front turning wheels, leading to a further lessening of the car ' s ability to turn in
此時如果進一步加速，只會加劇推頭，因為重量轉移到后輪，前輪（轉向輪）承受的重量減少，導致車輛的轉向性能變差。Heat is that form of energy which passes from one body to another solely as a result of a difference in temperature.
熱是一種由於溫差而自動從一個物體轉至另一個物體的能量形成。Recently, train is running faster and faster, and considering the stability and security, seamless welded rails ( swr ) are used as the train orbits gradually. the temperature of the rails will vary with weather. so that the rails may release the energy due to the metal characteristic of expanding or contracting with temperature, there is some badly distortion in the swr, worsly occurring accidents on expanding orbits. the portrait thermal stress ( pts ) of the swr should be monitored in some parts regularly, as to avoid such accident
近年來，隨著火車的提速造成的穩定和安全問題，軌道逐步轉為採用無縫焊接鋼軌，隨著鋼軌溫度的變化，無縫鋼軌可能會因為熱脹或冷縮的金屬特性並且在扣件阻力小而且路基較差的路段釋放能量，可能會發生鋼軌嚴重變形，更甚者會發生脹軌跑道等嚴重鐵道事故，為了避免發生如此事故，有必要定期對鋼軌的溫度應力進行檢測。It also builds the mathematic model of all section of vscf ac exited wind power generation system on a - b - b and d - q coordinate system by the coordinate commutation technology. the thesis gives the characteristics of torque, active power, reactive power and the steady - state analysis of it. it proves that the capability of wind generator is determined to slip, the amplitude and phase of rotor voltage, the phase dispatch between stator voltage and rotor voltage
並分析了交流勵磁風力發電機作變速恆頻運行時的工作原理，闡述了與同步發電機、異步發電機的不同之處，分析了其能量平衡關系，在坐標變換技術的幫助下，詳細推導了交流勵磁發電機在a - b - c坐標系和d - q坐標系下的數學模型，分析並模擬了其有功和無功特性、轉矩和功率調節特性、穩態運行和機械特性，證明了發電機的性能由轉差率、轉子電壓的相位和幅值、定轉子電壓相位差所決定的。Perhaps the difficulty is how to build a im model which not only can work at common state but also can embody the high - frequency characteristic. in this thesis, we build two different parts separately to realize two different states, but we use speed, angle of flux and son on to connect them into one model
主要原因是該方法所需的異步電機模型相當復雜：首先該模型能在基波條件下工作，實現基本的機電能量轉換，其次該模型還要對高頻信號進行響應，體現出高頻激勵下d - q軸阻抗差異特性。Adopting high slip motor and increasing the rotary inertia of the rotating parts is an effective approach to achieving good power - saving effect of beam pumping units
採用高轉差率電動機，並增加旋轉件的轉動慣量，是綜合提高游梁式抽油機節能效果的有效途徑。This phenomenon farther surport our conclusion in the analysis of evolution stars, i. e. the difference of stellar chromosphere and corona activity of evolution stars is bred by the energy balance and heating mechanism in stellar chromosphere and corona
M型主序星在演化恆星的冕球活動與色球活動行為的差異則是由於m型主序星的色球與冕球間存在的能量平衡和轉移過程產生的。The main factors influencing power saving of the beam pumping unit with high slip motor are pumping speed of the unit, slip ratio of the motor and rotary inertia of rotating parts
指出影響使用高轉差率電動機的游梁式抽油機節能的主要因素是抽油機的沖次、電動機轉差率和旋轉件的轉動慣量。In the actuation, the feeling measure and the balance compensation, the gyroscope used the electric capacity with the high sensitivity, the low energy consumption, and combined with the high quality factor characteristic of the resonance main body, which enable its system to have the quite outstanding performance : the vibration gyroscopes were generally used to measure the rotation rate, but because of axial symmetry factor, the axial symmetry vibrating - shell gyroscope can be used to measure not only the rotation rate but also the rotation angle, moreover do not bring the accumulation error as a result of the integral
該陀螺在驅動、感測與平衡補償上採用具有高靈敏度、低能量消耗的電容，並結合諧振體高品質的特性，有相當優異的表現:振動式陀螺儀一般都是用來感測轉速，而軸對稱殼式陀螺儀由於軸對稱的因素，不僅可以用來感測轉速，而且可以感測物體的轉角，並且避免了由於積分而帶來的積累誤差。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。At the case of excess of nonlinear effects appearance threshold, not only are quality reduction of the wave front passing optical elements and energy losses possible, but also the fatal destruction of optical elements in themselves are the most grievous
當泵浦光強度超過產生非線性效應的閾值時，激光通過諧波轉換晶體后，不但光束波前質量將有可能變差，而且還會損失一部分能量，更嚴重的是光學元件的致命破壞。The main work done in this dissertation is organized as follows : in chapter 1, we consider a vibrating non - homogeneous beam with one segment made of viscoelastic material of kelvin - voigt type, and other parts made of elastic material by means of timoshenko model
當梁的橫截面的尺寸與其長度相比不能忽略時，需要考慮轉動慣量的影響，此時梁的模型由rayleigh梁給出。進一步，如果再考慮到由剪切力引起的偏差，就需要引入timoshenko梁的模型。However, the performance of these algorithms that are based on linear approximation degrades considerably in highly nonlinear situation. whereas the ekf requires the evaluation of the jacobian to obtain the observation matrix, the cmkf needs it to compute the measurement error covariance. both of them employ linear approximation, and thus linear error is inevitible
論文第四章分析了ekf和cmkf在某些情況下跟蹤性能不理想的原因： ekf需要對量測方程進行線性近似， cmkf在計算轉換測量值誤差的均值和方差時同樣要進行線性近似，因此無法避免線性化誤差。Towards the defects of experimental apparatus of rigid - body dynamics inertia, the paper has put forward a modification scheme in order to bear more powerful functions on the experimental apparatus, to have more direct experimental operation, to own smaller errors, and to possess greatly improved success rate
摘要本文針對剛體轉動慣量實驗儀的不足，提出了改進方案，使儀器功能更強大，實驗操作更簡捷，誤差更小，成功率大大提高。Summarizing the development statement of monitoring technology for bridge, based on principle of pulse laser ranger detection and fiber - optic strain measurement, in view of the problem affected by single - chip inherent feature, integrating the goodness of cpld device and single - chip, using a / d converter to measure the count quantization error, a strain measurement system is worked out. the above system chiefly consists of light source, optic fiber sensor, photo detector and signal processing circuit
本文綜述了國內外橋梁監測技術的發展概況，在深入研究脈沖激光測距和光纖應變測試原理的基礎上，針對單片機固有計數頻率低、計數量化誤差大和延時不固定等不足，結合cpld計數頻率高、延時小而固定和單片機控制功能強的優勢，並採用模數轉換技術設計計數量化誤差測量電路，提出了基於激光脈沖時間測量法的光纖應變測量的方案。分享友人