負性變力 的英文怎麼說
中文拼音 [fùxìngbiànlì]
負性變力
英文
negative inotropic-
This project mainly studies the effects of breathing 70 % oxygen on hemorheology after incremental exercise to exhaustion. the blood viscosity ( bv ), plasma viscosity ( pv ), erythrocyte aggregation index ( al and a2 ), erythrocyte deformability index ( tk ), erythrocyte rigid index ( vr ) and hematocrit ( hct ) were obtained and analyzed. the vo2 max, hl, hr and po2 were measured and analyzed quantitatively as well
本文觀察了一次性遞增負荷至力竭運動以及運動后吸入高濃度氧對血液流變性的影響，通過對運動后血液流變學指標與最大吸氧量、血氧飽和度、血乳酸、心率等指標作多因素相關分析，為運動影響血液流變學的原因和機制的研究提供一定的實驗依據。Great intermittent noise, wide variety of impendence along with the load and great attenuation of signals have restricted the further utilization of power line
但是，電力線通信通道存在間歇性噪聲大、阻抗隨負載變化大、信號衰減大等缺點，嚴重製約了它的有效利用。The paper analyzes the non - lineal relations of the quantity of heat exchange and water flux of coil exchanger in part - load operating condition, the shortage of deciding the water flux in bypass pipe, the disadvantage that the operating condition of pumps and chiller ca n ' t be met with the load change of the air conditioning system in different operating condition of using pressure - difference bypassing control in primary water pump system. using load control method in the change of the operating condition of primary water pump system can realize that the load change is small and reasonable in the on / off condition of pumps and m m chiller by comparing load control method in primary variable - flow water pump system with pressure - difference bypassing control method, back water temperature control method
本論文從目前空調工程中使用的變流量水系統入手，研究了盤管換熱器在部分負荷下水流量與換熱量的非線性關系，分析了文獻中介紹的旁通管通流能力選擇的不足之處和一次泵水系統採用壓差旁通控制時，工況轉換不能滿足系統控制要求的缺陷；比較了一次泵變流量水系統中壓差旁通控製法、回水溫度控製法、負荷控製法的精確性，並得出了在一次泵水系統的工況轉換時，採用負荷控製法能使冷水機組及其相應水泵在啟停時的負荷變化范圍較小，更符合建築物的冷量需求，節能效果較好的結論。Analysis is done on the change rules of liquid " s temperature along with the pipeline " s distance. the paper points out the defects of the const pressure wave velocity method and do some improvements on it : rebuilding the expressions of the pressure wave velocity in accordance with the simpson ' s rule
分析了管道內的流體溫度隨傳輸距離而變化的規律，並指出了此規律對管道負內壓力波傳播速度的影響。指出了常負壓力波波速定位方法的局限性，並採用改進的負壓力波定位技術，將管道內的負壓力波速公式採用復化辛普森公式進行了改造。The ability of a material to become permanently deformed ? stretched, drawn, or hammered without failure while maintaining an appreciable load
變成永久性變形的能力-擴展，拉伸，或錘鍛后在可預估的持續負載下不出現故障的能力。This digital amplifier made up of a digital inverter can implement the sine voltage signal ' s power amplifying based on the digital signal processor. with the high processing ability of dsp, the advanced digital control arithmetic can be realized in the software. also the feasible and effective technique for the time delay compensation of digital control can be achieved
該放大系統用數字化逆變器來實現電力系統正弦電壓信號功率的放大，利用dsp數字處理器高速的處理能力，可以使系統實現高性能的演算法控制，並且能靈活地對系統的誤差進行補償，從而實現逆變系統的高性能和高精度，為解決電力系統電容式互感器二次側帶負載能力弱的問題進行了有意義的研究。This thesis also have constructed mathematic model based on the analytic method, which used the load as input and the pressure as output, meanwhile, it have made theoretic analysis of time response. the theoretic analysis was highly agreed with the experimental result
在對出口節流調速系統液壓缸兩腔壓力隨負載變化的動態特性的理論分析時，用解析法建立了以負載為輸入，壓力為輸出的數學模型，進行時間響應分析，其理論分析結果與試驗結果相吻合。Test results show that : ( 1 ) the amount of creep deformation during monotonic primary loading depends on strain rate before creep, creep stress level, and creep time ; ( 2 ) during monotonic primary loading, the stiffness increasing magnificently shortly after creep ; ( 3 ) the direction of creep will change from positive creep ; to neutral creep and negative creep during unloading, while during reloading, it will change from negative, to neutral and positive creep
試驗結果表明： （ 1 ）在初始加載過程中，經過一定時間蠕變后黏土的強度有很大的提高； （ 2 ）在卸載過程中，隨應力值下降黏土的蠕變表現出由正蠕變、中性蠕變到負蠕變的逐漸轉化； （ 3 ）在重復加載過程中，隨應力值增加黏土的蠕變表現出由負蠕變、中性蠕變到正蠕變的逐漸轉化。Because of the randomness, the periodicity and the impact property of load changes, the short - range electric load forecasting accuracy is related to the pre - processing of original data, the load forecasting model, the sudden change of climate etc. without an appropriate mathematical model, it is difficult to meet the demand of farecasting accuracy by using computer software
短期電力負荷預報的準確度與原始數據的預處理、負荷特性、預報模型、氣候突變等因素有關，因為負荷變動具有隨機性、周期性和沖擊性的特性，如果不採用恰當的數學模型，利用計算機軟體技術就難以滿足預報準確度要求。Nylon is predominantly used past the useful pressure range of tfe because of its ability to resist permanent deformation ( or creep ), and recovery after load
在tfe有效壓力范圍內，尼龍以前被廣泛的使用，因為尼龍具有抗永久性變形（或蠕變）的能力，並且在負載后能夠自行恢復。The descending part of the curves are much sharper than the ones under the normal temperature. the ductility of the concrete will also get worse and the brittleness will increase
應力?應變曲線形狀隨負溫值的增大變得高而窄，曲線的下降段比常溫陡直，混凝土的延性變差，脆性增大。With the method of this paper, we can get the optimum load distribution in working units and also can get the best combination of all the units in one power station
結合對機組運行的特點和負荷變化特性分析，得出了燃煤火力發電廠現有機組間的最優組合和最佳負荷分配方案。The results as follows : ( 1 ) the disorder of hemorheology was caused by incremental exercise to exhaustion
實驗結果表明： （ 1 ）遞增負荷至力竭性運動可以引起血液流變性質的異常。The further research in port engineering pile foundation is considered to be important of such as behavior and bearing capacity of laterally loaded single piles and pile groups, and the functional mode of wharf foundation pile under flood tide torrent, and load - deflection curve, and negative skin friction along the pile, et al. the bearing capacity and the negative skin friction of port engineering piles are analyzed, to satisfy port engineering development demand better
在港口樁基工程領域，港口工程水平承載（群）樁的工作性狀以及承載力計算方法，漲潮急流等動態荷載作用條件下碼頭基樁的受力性狀，樁的作用荷載與變位趨勢關系、樁的負摩擦等問題都要求作進一步的研究。本文致力於以港口工程樁基為主要研究對象，對港口工程（群）樁基水平承載力和負摩擦力進行研究，以更好地滿足港口工程建設需要。The problem of noise is a chief block to restrict the popularity and developement of the plc because of the irregularity of power line network, the randomness of transmission distrance and load facility diversities
由於低壓范圍內電力線網路的非規則性、傳輸距離的隨意性、以及電力線上負載變化的多樣性，使得干擾問題成為制約低壓電力線載波通信發展和普及的主要障礙。Repetitive control is used to reduce voltage distortion under abrupt load variation or nonlinear loads and attain good quality of the voltage waveform ; current loop is designed to quicken the dynamic response and strengthen the ability of the inverter control
重復控制可以抑制逆變電源在負載變化嚴重（空載加到滿載）或者非線性負載條件下的輸出電壓畸變，保證輸出波形的質量；電流環用以改善輸出波形的動態響應特性，提高逆變控制的能力。This article emphatically discussed and analyzed following points : load command feed forward function can improve the rapid respond character of steam turbine generator ; lead of load command have advance control function on boiler main control and can highly improve the stability of main steam pressure ; the use of predict control and state space variable function can improve the quality of boiler steam temperature control effectively, control the steam temperature in the defined range and increase the boiler and turbine life and efficiency even if working state changed in a big range ; linear compensation can restrain the vibration of generator load in the condition of big loa d change
本文重點討論、分析提出負荷指令前饋作用可以提高汽輪發電機快速響應特性；負荷指令的導前功能對鍋爐主控有超前控製作用，能顯著提高主蒸汽壓力的穩定性；採用預測及狀態空間法能有效改進鍋爐蒸汽溫度控製品質，在大幅度工況變化下仍有效控制蒸汽溫度在額定范圍內，提高鍋爐、汽輪機壽命及其效率；汽輪發電機組的快速響應性與汽輪發電機組負荷振蕩問題間的平衡關系，採用線性補償可以有效抑制在負荷變化梯度較大情況下發電機負荷振蕩問題。First, n - degree of freedom robotic manipulator control problem is studied. on the basis of computed torque ( ct ), the uncertainty is learned by the neural network, and the output of the neural network is used as compensator. this approach overcome the deterioration of control performance due to the uncertainties including working circumstance and load change
針對計算力矩法對模型誤差敏感，魯棒性差的特點，文中將神經網路和計算力矩方法結合，首先根據標稱模型設計計算力矩控制器，然後採用神經網路來學習系統中的不確定性，神經網路的輸出作為補償控制器：有效的克服了機械手由於工作環境和負載變化等不確定性引起的控製品質的破壞。Negative inotropic action
負性變力效應Special grids is adopted for solid model of conical roller bearings by applying for three - dimensional solid and contact elements, aiming at its characteristic, stress and load distribution of elastic contact problems. finite element model built in the paper is fit for objective practice, with flexible - flexible contact bodies and surfaces - surfaces contact mode
本文針對汽車后橋傳動錐軸承的接觸彈性變形特點、接觸應力及負荷分佈規律，採用三維實體單元及三維接觸單元對圓錐滾子軸承實體模型進行特殊的有限元網格劃分，將接觸單元按柔體一柔體處理，採用面一面接觸分析模式，建立了符合實際的有限元模型。分享友人