symmetrical system

The analysis and calculation on system frequency changing, oscillating and symmetrical fault offers reference for choosing arithmetic of digital negative sequence unbalance output in relay protection.

分析计算这2种方法在系统频率变化和振荡以及三相故障时的负序不平衡输出，为数字式负序滤过器的算法选择和继电保护中负序不平衡量的定值整定提供依据。

Two design strategies that three-way valve control unsymmetrical cylinder and four way valve control symmetrical cylinder were analyzed from principle and system structure aspects.

对船用舵机泵控系统中位置控制单元的三通阀控制非对称缸和四通阀控制对称缸的两种设计方案进行了理论分析和系统结构分析。

Research on Dynamic Characteristics of Zero Open Symmetrical Cylinder Controlled by Four-way Slide Valve System

零开口四通滑阀控制液压缸系统动态特性研究

The first order approximation of the primary resonance of a harmonically forced symmetrical piecewise linear system is derived by using KBM approach.

由KBM法推出的分段线性系统主共振的一次近似解，导出了分叉方程。

Results Clinically, there were symmetrical sensory-motor peripheral neuropathy in 2 cases, mononeuropathy multiplex in 2 cases, pure sensory peripheral neuropathy in one case, cranial nerves injuries in 2 cases and central nervous system involvement in 2 cases.

结果对称性感觉运动性周围神经病2例，多发性单神经病2例，感觉性周围神经病1例，脑神经损伤2例，累及中枢神经2例。

To eliminate the radial pressure imposed on the rotated shaft by the carbon brush and realize good electrical Conductibility, the symmetrical double carbon brush is adopted in the system.

采用对称碳刷设计进行旋转工具电极引电，消除碳刷对旋转轴的径向压力，保证引电可靠；

This paper makes an application of the Pfeiffer's theory to discuss the spinning stability of the satellite system with a symmetrical liquid-filled cavity.

本文应用Pfeiffer的思想讨论带轴对称充液腔的卫星系统自旋稳定性。

This paper analyzes the nonlinear vibration characteristics and stability of a symmetrical rotor of single mass supported on multi-wedge bearings, and studies the cause and danger of the semi-frequency vibration, which may occur between the first critical speed and the stability threshold speed of the system.

本文分析了多油楔轴承支承的单质量对称转子系统的非线性振动和稳定特性，研究了临界转速与失稳转速之间半频振动产生原因及其危害性。

Aiming at the shortcoming of digital signature based on symmetrical and dissymmetrical cryptographic system in network, the scheme of digital signature based on hybrid pattern cryptographic system is presented.

针对网络环境下信息安全技术中基于对称和非对称密码体制的数字签名技术的不足，提出了混合方式密码体制的数字签名方案；