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    CV and EIS tests show that two redox couples of Ni2+/Ni3+ and Co3+/Co4+ are observed in the potential range of 2.80~4.80 V, and charge transfer resistance of the cathode decreases as the charge cutoff voltage increased.
    循环伏安测试表明:在2.80~4.80V扫描范围内,该正极材料发生Ni2+/Ni3+,Co3+/Co4+两对电化学反应。 EIS测试表明:随着充电截止电压的增大,该正极材料的传荷电阻变小。
    The specific discharge capacity at the first 10 cycles can reach 170 mAh/g when the limited charge voltage is raised to 4.4 V.
    将充电截止电位提高至4.4V后,前10次的放电比容量可达170mAh/g。
    The simulation scheme of direct torque control based on a new stator flux observer with variable cutoff frequency is built in the Matlab6.5/Simulink,Its feasibility is verified by the simulation results.
    在MATLAB6.5/SIMULINK下,对基于模糊截止频率可调的定子磁链观测器的直接转矩控制进行了仿真,仿真结果验证了这种方法的有效性。
    Design and analysis of current cut off protection circuit
    一种电流截止型保护电路的设计
    Anomalous Propagation of Gaussian Wave Packet Through the Cut-Off Waveguide
    高斯波包在截止波导中的传播
    The technology of dynamic power management based on energy consumption of scheduling and task deadline
    基于调度能耗/任务截止期的动态电源管理技术
    Research on the method and the theory of measuring permittivity of microwave ceramics by cutoff waveguide dielectric resonator
    截止波导介质腔介电常数测量理论与方法研究
    Analysis on the place of neutral point for the pneumatic shut-off valve
    气动截止阀中性点设置分析
    structure and electrochemistry of experimental cell with K2FeO4 as cathode active material prepared by three different methods: high temperature reaction ,hypochlorite oxidizing and electrolysis, was comparatively studied .
    一、不同金属负极与K_2FeO_4所组装实验电池的开路电压、恒阻放电曲线中的平台工作电压、恒阻放电截止到1.0V时K_2FeO_4的容量利用率依Al/K_2FeO_4、Zn/K_2FeO_4、Cd/K_2FeO_4、Fe/K_2FeO_4的顺序逐渐降低;
    The 75m, 10.5kV /1.5kA three-phase AC superconducting cable system has been connected in grid and has begun to supply power for Gansu Changtong Cable Science & Technology Co.
    截止2005.04.20目75m长10.5kV/1.5kA三相交流超导电缆通电累计超过900小时。
    iqmethod and the hysteresis-based current control strategy has been simulated, and analyze the inductor and the cut-off frequency which affect the performance of shunt active power filters.
    iq谐波电流检测和电流滞环跟踪控制技术的并联型有源电力滤波器进行了仿真研究,重点分析了影响有源电力滤波器补偿效果的滤波电感和采样电路截止频率。
    Besides, special PWM regulating chipsets and logic hardware elements are used to construct a 96VDC square-wave drive system, which adopts a wide-range input voltage switch power supply to provide power supply to the system, and brings negative off-current feedback into the brushless motor drive system, in this way the reliability of a high-power square-wave drive system can be improved, and the prototype system is steady with a 30A load current at most.
    同时,采用专用PWM调制芯片和硬件逻辑器件构成96VDC方波驱动系统,采用宽范围输入电压的开关电源实现系统的控制供电,将直流电机系统常用的电流截止负反馈电路引入无刷电机驱动系统中,提高了大功率方波驱动系统的可靠性,其原理样机性能稳定,负载电流可达30A。
    The ferrite sample could be sintered under 900℃ without dopant, Its properties were as follow:pia:ot = 500'μi900℃= 900, quality factor ≥5. cutoff frequencies were about 10MHz.
    所获得不加助熔剂的 Ni—Zn—Cu烧结铁氧体具有低烧(≤900℃)、高性能的特点,主要磁性能指标如下:μi870℃=500,μ900℃=900,品质因数大于5,截止频率约10MHz。
    When the CNT content in the recombination electrode is 5% (mass percentage) and the cut off voltage for charging is 3 V, the specific discharge capacitance of CNT/AC recombinaton electrode is up to 43 F·g -1 , whereas that of AC electrode is only 33 F·g -1 . The self discharge rate of EDLC with recombination electrode is reduced by about 50%.
    当复合电极中CNT含量为 5 % (质量百分数 )时 ,充电截止电压为 3V的条件下 ,CNT/AC复合电极的放电容量达 43F/g ,而AC电极仅 3 3F/g ,复合电极组成的EDLC的自放电速率下降约 5 0 %。
    Barium ferrites with initial permeability μ1 >10. cut-off frequency >lGHz were obtained when it was sintered at 900℃ with 2wt% Bi2O3 in the Co-Ti substitution range 1. 20-1. 30.
    替代量在1.20~1.30的范围内,添加2%(质量分数)的Bi2O3可以在900℃低温烧结出磁导率μ'>10,截止频率不低于1GHz的Co-Ti替代钡铁氧体。
    The samples exhibit relaxation type magnetic spectrum with the cut-off frequency below 100MHz.
    截止频率低于100MHz,磁谱曲线呈弛豫型。
    Rate of temperature increase 1.5~2 ℃·min-1 as a basis for charge cutoff is not fit for 80 Ah prismatic Ni-MH battery, so it needs to redecide the rate of temperature increase .
    以前将作为充电终点判据的温升速率确定为1.5~2.0℃·min-1,不适合80Ah方型电池,须重新确定充电截止温升速率;
    Considering the performance of both dynamic and static response, the cutoff frequency should be 10—40 Hz.
    结果表明,为了兼顾检测系统动、静态特性的要求,等效滤波器的截止频率应为10~40Hz;
    They showed relative stability and no side-reaction occurred when batteries cycled between 2 V and 3.8 V at 0.2 mA. The most discharge capacity is 85.02 mAh· g-1 calculated by PPy.
    正极片成型压力为20MPa,充放电电流0.2mA,充放电截止电压分别为3.8V和2.0V的情况下,放电容量以PPy计可达43.79mAh·g-1;
    The capacity could reach to 190 mAh/g when the cut off voltage increased to (4.60 V.)
    当截止电压升高到4.60 V时,容量可达190 mAh/g。
 

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