Nowadays, the constant-power-control variable displacement axial-piston hydraulic pump have be used in.
由于大多数工程机械利用全功率轴向柱塞变量泵作为其动力装备，柱塞泵质量的好坏将关系到工程机械的总体质量，而柱塞又是柱塞泵的主要部件，因此有必要利用现代设计方法对柱塞泵的柱塞进行研究分析。
The correct connection means of zero-sequence power direction for LG-1.
阐述了中性点直接接地系统单相接地短路时零序电压、零序电流、零序功率的特点,对常规零序方向保护和微机型零序方向保护的原理进行了对比分析,指出LG-12型功率方向继电器以及WXH-11型、CSL-160型零序方向保护中零序功率方向的正确接线方式。
When regional power network connects with power system,in order to reduce the influence on relay protection and automation devices of power system, using the disconnecting device based on the principle of undervoltage_blocking power direction and power direction overcurrent is practical and effective measures.
地方电网与电力系统并网运行时，为了减少对电力系统继电保护及自动装置的影响，采用低电压闭锁功率方向、功率方向过电流等解列装置的方法是切实可行的有效措施，利用相量图分析的方法重点论证装置中的相间功率方向元件的接线方式及在各种可能的情况下发生各种类型故障短路时的动作行为。
three-phase power directional relay
三相功率方向继电器
Analysis of the reason of pilot zero sequence directional protection mal-function and study of negative sequence directional element on parallel double-circuit lines
平行双回线路纵联零序方向误动原因分析及负序功率方向研究
It mainly focuses on analysis and determining method of zero sequence power direction relay.
重点介绍零序功率方向继电器的分析及判定方法。
Abstract: Zero sequence directional power protection is widely used in neutral directly grounded system.
文摘:在大电流接地系统中广泛采用着零序功率方向保护。
The Research of Fault Line Selection for Single Phase to Earth Fault Based on Zero-Sequence Transient Power Direction in Power Network with Ungrounded Neutral;
基于零序暂态功率方向的消弧线圈接地系统故障选线装置的研究
Mechanism of the influence of the panel positional error on the power pattern of large reflector antennas
面板位置误差对反射面天线功率方向图的影响机理
equivalent isotropic radiated power
等效无方向辐射功率
Functions and features of PeriScope 15 azimuthal orientation resistivity measuring instrument
PeriScope 15方位定向电阻率测量仪的功能与特点
Power spectrum analysis of omni-directional M-mode echocardiography and its clinical experiments
全方向M型心动图的功率谱及其临床数据分析
Wind speed and wind power prediction based on SVM
基于支持向量机的风速与风功率预测方法研究
axial power distribution monitoring system
轴向功率分布监测系统
induction type power directional relay
感应式功率定向继电器
electronic valve type power directional relay
电子管功率定向继电器
This radiator has, for any wavelength and any direction, the maximum spectral concentration of radiance at a given temperature.
在给定温度下，对于所有波长和入射方向黑体辐射功率最大。
Short Term Wind Power Prediction Based on Support Vector Machine
基于支持向量机的风电场功率短期预测方法研究
Research on the SVM based Large-Signal Modeling Method of Microwave Power FET
基于支持向量机的微波功率FET大信号建模方法的研究
The Development Orientation of Technical Innovation in High-power Doubly-fed Asynchronous Wind Generator
大功率双馈异步风力发电机技术创新的发展方向
A New Method on Optimal Real-Time Pricing of Active and Reactive Powers
有功与无功功率最优实时定价新方法
