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负载对
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     Influence of honing load on resonance frequency of ultrasonic honing vibration system
     珩磨负载对超声珩磨振动系统谐振频率的影响
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     Simulations with Matlab / Simulink show that,the method eliminates the influence of nonlinearity and unbalanced load on power system and makes the input power factor equal to 1.Furthermore,the series compensator isolates the effect of network voltage variation on load voltage and the shunt compensator provides balanced and sinusoidal rated three-phase voltages to load.
     Matlab/Simulink仿真结果表明,采用该方法可以有效地消除非线性及不平衡负载对电网的影响,使电网输入功率因数为1,同时,串联补偿器隔离了电网电压对负载电压的扰动,并联补偿器给负载提供三相平衡及正弦的额定电压,不受电网电压变化的影响。
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     The Influence of Different Load on Control Voltage of the Battery in Control System of Wind/Solar Hybrid Generation
     风光互补发电控制系统不同负载对蓄电池控制电压的影响
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     Effects of secondary load on error of current transformers and its test method
     二次负载对电流互感器误差的影响及测试方法
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     Analyzed the influence of nonlinear load on generating set,some synthetic methods are discussed.
     分析了非线性负载对发电机组的影响,探讨了一些综合治理的方法。
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     The affection of heating rate, heated history and load to the result of TMA measurement is discussed.
     讨论了升温速率,热历史和负载对TMA测定结果的影响。
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     Teh Influence and Harm of Nonlinear and Non-balanced load to the Power Network
     非线性及不平衡负载对电网的影响及其危害
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     This paper presents a reasonable method to determine the contributions of reactive currents of each shunt load to the total reactive current supplied by PCC. If the projection of a load reactive current on the PCC reactive current has the same sign with the PCC reactive current, then this load’s reactive current contribution is in proportion to its reactive current projection.
     该文提出了一个合理的确定各负载对PCC无功功率的贡献的方法:如果某一负载的无功电流在PCC提供的无功电流上的投影为正,则这一负载对PCC无功电流的贡献与其在PCC无功电流上的投影大小成正比;
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     The effect of reactive load to resonance frequency of horn is analyzed by numerical calculation.
     应用数值计算方法,分析了力抗负载对变幅杆谐振频率的影响.
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     According to wear and energy-saving principle of three-phase asynchronous motor,relations between pressure of motor and load are researched herein that is pressure is restrained by the load to rate.
     根据三相异步电动机损耗及节能原理,研究异步电动机端电压与负载大小之间的关系:电压将受负载对转速要求的制约。
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     (1) Pt/TiO_2 and Ag/TiO_2 were characterized with XRF, TEM and XRD and the result showed that Pt doping or Ag doping had no effect on crystal structure of TiO_2 and Pt and Ag are distributed on surface of TiO_2 evenly with small grain size, some even reached l~2nm.
     (1) 对Pt/TiO_2、Ag/TiO_2进行TEM、XRD分析,结果表明Pt、Ag的负载对TiO_2的晶型没有影响,且都高度分散于TiO_2表面,粒径较小,甚至达到1~2nm左右。
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     (2) the species of the active component is (Co, Mn)(Co, Mn)_2O_4. (3) the chemical bonds of supporter were influenced by active components.
     (2)催化剂的活性组分以氧化物(Co,Mn)(Co,Mn)_2O_4形态存在。 (3)活性组分的负载对载体化学键有一定的影响。
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     Synthesis of n-Butyl Acetate Catalyzed by TsOH—SBA—15
     SBA—15负载对甲苯磺酸催化合成乙酸正丁酯
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     The effect of load of Co and Ag on the CaFe0.3Ni0.7O3 is studied, and indicates that the activity of CaFe0.3Ni0.7O3 supporting Co is muchlower, while the activity of CaFeo. 3Ni0.7O3 supporting Ag is increased and that the rate of degradation of acid red B is 96%.
     进一步研究了Co,Ag负载对CaFe_(0.3)Ni_(0.7)O_3光催化活性的影响,结果显示负载Co使活性大幅度下降,而负载Ag使活性上升至96%以上。
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     Otherwise the load has no reactive current contribution to the PCC.
     如果投影为负,则这一负载对PCC无功电流没有贡献,其无功电流只在负载间流动。
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  load on
The changes in the thymus mass and histostructure suggest that the functional load on the thymus increased under studied the experimental conditions.
      
Laser radiation stimulated regenerative activity of the skeletal muscle and favored a more even distribution of load on the thymus (a smooth decrease in its weight and slow aplasia).
      
The load on the thymus increased, its weight and cortical layer restoration decelerated, and aplasia was observed.
      
For the direct problem in the case of supersonic flow an expression is derived for finding the load on the wing with maximal allowance for the wing geometry.
      
In the inverse problem for supersonic and subsonic flows, expressions are derived for finding the wing geometry from given values of the load on the wing and the variation of the load along the span of the wing.
      
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It is found that the ratio of initial cracking load to maximum load is 0.67-0.71 and the ratio of initial fracture toughness to unstable fracture toughness is 0.45-0.50.
      
Physiological basis of differences in the body tolerance to submaximal physical load to capacity in healthy young individuals
      
A new method for studying charge degradation of MIS structures by applying a controlled current load to the structure and taking the time dependence of the voltage is suggested.
      
Optimization of the parameters of an acoustic delay line by applying a rear acoustic load to a piezoelectric transducer
      
Application of a load to both YBCO and PBCO in the orthorhombic phase causes an increase in the chemical potential within the 0.5>amp;lt;x>amp;lt;0.8 interval, which is interpreted as a phase-separation region.
      
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The effect of electric load on the piezoelectric vibrational system due to electroacoustic coupling was analytically investigated. The analytical results shown that: (1) when load impedance continually changes from -∞ to+∞, the mechanical resonant frequency of the system would fill all frequency domain from 0 to ∞; (2) the displacement and stress distributions also would change, even the displacement may be zero at both free ends (i.e. at points where stress is equal to zero).

我们研究分析了由于电声耦合,电负载对压电振动系统特性的影响.结果表明:(1)在电负载阻抗由-∞到+∞改变时,系统的机械谐振频率将充满0到∞整个频率域;(2)位移和应力分布.也将随之变化,甚至在两自由端(应力等于零的地方)位移也可能为零.我们还给出了侧向极化压电条的纵向振动的实验结果,并与理论分析进行比较.

A new circuit of angle transducer is described. It is a phase-in-verted rectifying and filtering circuit consisting of a selsyn, diodes, resistors andcapacitors etc. The transducer can change angle displacement into d. c. voltage. Thereis a relationship of sine function between d. c. voltage output and angle displace-ment input in every operating intervals. The main advantage of the transducer is thatit can eliminate the null-position voltage, which exists in the form of the residuala. c. voltage output in the...

A new circuit of angle transducer is described. It is a phase-in-verted rectifying and filtering circuit consisting of a selsyn, diodes, resistors andcapacitors etc. The transducer can change angle displacement into d. c. voltage. Thereis a relationship of sine function between d. c. voltage output and angle displace-ment input in every operating intervals. The main advantage of the transducer is thatit can eliminate the null-position voltage, which exists in the form of the residuala. c. voltage output in the case of using selsyn only, therefore the precision of themeasurement can be greatly improved. Besides, the circuit structure of the transdu-cer is simple. It is easy both in implementation and regulation. It is cheap in cost.In short, it is a simple, reliable, economical and practical angle transducer. In thispaper, the output characteristic (voltage-angle characteristic) of the circuit of angletransducer is theoretically analysed in detail and is studied by experiments. Quanti-tative relationships between output characteristic and parameters of the circuit areobtained, and simple and practical formulas for design are derived. For example,output characteristic is analysed and operating intervals are divided under the load-ed and non-loaded conditions. The load effects upon the range of operating inter-vals are discussed. The problems such as regulation of the transfer coefficient and"zero", extension and reduction of range, angle and voltage displacement of outputcharacteristic are also discussed. Therefore, output characteristic curve can be moved,extended and reduced along α-axis or U-axis on Decker coordinate plane. Consequ-ently, the transducer can be made to satisfy the design specifications presented bythe users. Based on theoretical and experimental study, principles of choosing circuitcomponents are presented according to the design formulas derived and the designdemands, and a new method of determining parameters of components by means ofthe calculation and the experiment is found. In the end, a design example of angletransducer circuit is given.

本文介绍一种使用自整角机配以适当的电路元件实现将角位移转变为直流电压信号的电路。该电路可以消除用自整角机输出交流电压时的剩余电压,从而提高了测量精度。文中将电路的输出特性(伏一角特性)划分为两种工作区,讨论了负载对各工作区宽度的影响,提出自整角机及电路元件参数选择和计算的原则和方法。最后给出该变送器的设计举例。

Eecently, in our papers[1,2] the effect of electric load on the characteristics of piezoelectric vibration system has been obtained. The resonant frequency of such a system changes continually with the changing of the electric load. In accordance with this effect, we made piezoelectric frequency-tunable transducers. In this paper, the principle of this freqency-tunable piezoelectric transducer is described.

最近,我们曾研究电负载对压电振动系统振动特性的影响。随着电负载的连续变化,通过压电效应,压电振动系统的谐振频率也连续地改变。由此引伸,可以实现可调频率压电换能器,本文将对其原理进行研讨。我们将对压电夹心换能器进行这种调节频率的理论分析,并对一种纵向加电场,纵向振动的夹心换能器进行实验比较。理论与实验结果一致表明,用有效耦合系数K_eff来衡量,该换能器可以在一个半倍频程的范围内有效地工作。这里提出的可调频率压电换能器,由于是改变电负载,通过压电耦合来实现换能器的频率调节的,因此它还具有方便、连续和瞬时可调的特点。

 
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