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 dc
 According to these results, we design cathode assembly for a DC 500mA electron gun with a planar 6mm-diameter cathode of single crystal LaB6, and measured 520mA beam current at 1700K, which accelerating voltage and distance between cathode and anode is 9kV and 12mm. 依据该实验结果,选择φ6单晶LaB6作为500mA直流电子枪的阴极,实验参数:阴阳极间距12mm、阴阳极电压9kV、阴极温度1700K, 法拉第筒测得520mA束流。 The Transient Analysis and Research for the 1MW High Power GTO DC Chopper in the Controlled Nuclear Fusion 受控核聚变 1MW 大功率 GTO 直流斩波器的暂态分析及研究 短句来源 Study on Clearing Ion Trapping Mechanism for DC Clearing Electric Field in the HLS Storage Ring HLS储存环直流清洗电极清除离子机理研究 短句来源 THE STUDY OF DISCHARGE CHARACTERISTICS OF DC PLASMA TORCH 直流等离子体炬放电特性研究 短句来源 Study of HLS Injection System with DC Assistant Bump 利用直流辅助凸轨设计HLS注入系统研究 短句来源 更多
 direct
 U_3Si_2 Powder Sphericized by Direct Current Plasm 直流电弧等离子体球化U_3Si_2粉体 短句来源 The device for sphericized U 3Si 2 powder by direct current arc plasma was fabricated. 研制了直流电弧等离子体球化U3 Si2 粉体装置。 短句来源 The injection parameters, including the dispersion functions, β functions and corrected chromaticities etc. , for Hefei electron storage ring were measured. Especially, the influence of the direct current clear electrode on injection state parameters was measured and analyzed. 合肥电子储存环的注入状态参数直接影响储存环的注入速率和储存的流强 ,注入状态参数需要研究 ,为此测量了注入状态参数 ,它们是色散函数、β函数、校正色品等 ,特别是对直流清洗电极对注入状态参数的影响进行了详细测量和分析 ,得出了一些重要的结论。 短句来源 Neutron sensitivities of detectors composed of plastic scintillator ST401, ST1422, ST1423 and photomultipher tube in primary energy range of fission neutron are calibrated by direct current. The energy response curve of the detectors is obtained in this experiment. 采用直流刻度方法,实验研究了ST401、ST1422或ST1423塑料闪烁体加光电倍增管组成的探测器的裂变中子灵敏度,获得了中子灵敏度随中子能量的变化关系。 短句来源 Using direct current scale,the neutron sensitivity of detecion systems composed of Pb fiter leaf and ST401,ST1422 and ST1423 detector,respectively, has been studied at the neutron energy 0.565 MeV,1.20 MeV,2.50 MeV,3.50 MeV,5.00 MeV and 14.16 MeV. From the experiment results we get the relation of the detector's sensitivity and the thickness of Pb fiter leaf,the thickness of scintillator,and the neutrons energy. 采用直流标定方法,实验研究了ST401,ST1422,ST1423组合探测系统对0.565—14.16MeV能量范围的6个能点的中子灵敏度,得到了探测系统的中子灵敏度随Pb过滤片厚度的变化、随闪烁体厚度的变化和随中子能量的变化关系. 短句来源
 direct current
 U_3Si_2 Powder Sphericized by Direct Current Plasm 直流电弧等离子体球化U_3Si_2粉体 短句来源 The device for sphericized U 3Si 2 powder by direct current arc plasma was fabricated. 研制了直流电弧等离子体球化U3 Si2 粉体装置。 短句来源 The injection parameters, including the dispersion functions, β functions and corrected chromaticities etc. , for Hefei electron storage ring were measured. Especially, the influence of the direct current clear electrode on injection state parameters was measured and analyzed. 合肥电子储存环的注入状态参数直接影响储存环的注入速率和储存的流强 ,注入状态参数需要研究 ,为此测量了注入状态参数 ,它们是色散函数、β函数、校正色品等 ,特别是对直流清洗电极对注入状态参数的影响进行了详细测量和分析 ,得出了一些重要的结论。 短句来源 Neutron sensitivities of detectors composed of plastic scintillator ST401, ST1422, ST1423 and photomultipher tube in primary energy range of fission neutron are calibrated by direct current. The energy response curve of the detectors is obtained in this experiment. 采用直流刻度方法,实验研究了ST401、ST1422或ST1423塑料闪烁体加光电倍增管组成的探测器的裂变中子灵敏度,获得了中子灵敏度随中子能量的变化关系。 短句来源 Using direct current scale,the neutron sensitivity of detecion systems composed of Pb fiter leaf and ST401,ST1422 and ST1423 detector,respectively, has been studied at the neutron energy 0.565 MeV,1.20 MeV,2.50 MeV,3.50 MeV,5.00 MeV and 14.16 MeV. From the experiment results we get the relation of the detector's sensitivity and the thickness of Pb fiter leaf,the thickness of scintillator,and the neutrons energy. 采用直流标定方法,实验研究了ST401,ST1422,ST1423组合探测系统对0.565—14.16MeV能量范围的6个能点的中子灵敏度,得到了探测系统的中子灵敏度随Pb过滤片厚度的变化、随闪烁体厚度的变化和随中子能量的变化关系. 短句来源

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 dc
 The structure and properties of the samples were investigated by XRD, Raman spectral techniques, and DC measurements and so on. Results of the analysis reveal that crystals of the complex 1 are orthorhombic, space group Pbcn, a = 4.6370(2) nm, b = 0.7549(2) nm, c = 1.3888(4) nm, V = 4.861(2) nm3, Z = 8, M = 945.49, Dc = 2.58 g/cm3, μ = 2.625 cm-1, R = 0.063, and wR = 0.075. Furthermore, it is clear that when carrier signal h(t)=0, closed-loop pulse-width modulation (PWM) DC-DC converters are not well posed, and when some condition is satisfied, the closed-loop PWM DC-DC converters with a P controller are well posed. The brushless DC motor (BLDCM) with trapezoidal electromotive force (back-EMF) waveform is used widely. Bifurcation and chaos in multi-parallel-connected current-mode controlled boost DC-DC converters 更多
 direct
 We express them in terms of generatorsEij ofU(gl(n)) and as differential operators on the space of matrices These expressions are a direct generalization of the classical Capelli identities. For a cellA?Wf we consider a full subcategory formed by direct sums of tilting modulesQ(λ) with highest weights. The Direct Summand Property in Modular Invariant Theory The group of direct isometries of the hyperbolic space ${\Bbb H}^n \mbox{is} G=\mbox{SO}_0(n,1).$ This isometric action admits many differentiable compactifications into an action on the closed n-dimensional ball. We show that ${\mathcal M}(G,R)$ is a symmetric tensor category, i.e., the motive of the product of two projective homogeneous G-varieties is a direct sum of twisted motives of projective homogeneous G-varieties. 更多
 direct current
 Direct current magnetic susceptibility measurement in the 2-300 K temperature range supports a high-spin ground state. This paper analyzed the operating principles and power and torque characteristics of the wind turbine and the direct current motor (DC motor), and investigated the operating characteristics of the wind turbine compared to that of the DC motor. Surfacing beads are prepared by a direct current tungsten inert gas arc nickel-aluminum (Ni-Al) powder surfacing process. Using A-TIG welding with the modes of alternating current (AC), direct current electrode negative (DCEN) and direct current electrode positive (DCEP), respectively, the flux differently affects weld penetration when the polarity is different. The structure, phase transition, oxygen ion diffusion and electrical conductivity were studied with X-ray diffraction (XRD), differential scanning calorimeter (DSC), direct current (dc) resistivity, and dielectric relaxation (DR) measurements. 更多
 hvdc
 Digital controller for hybrid filter in HVDC based on approximate inverse system The results of both simulations based on PSCAD and experiments on a 30 kVA HVDC system prove that the proposed digital control system is stable and efficient for eliminating the harmonics. A robust adaptive control with unmodeled dynamic for HVDC transmission systems Utilizing the feature of quick response of HVDC to improve the performance of AC/DC system has become the emphasis to be researched. The additional control of HVDC with unmodeled dynamics only uses the local signals and its design is simple, furthermore it can obviously improve the stability of power system in different operational conditions. 更多
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