1) steady-state operating frequency
稳态工作频率
1.
Assuming constant steady-state operating frequency of the machine,the expression of torque acting on the eccentric weights was obtained by solving the dynamical equations.
建立惯性往复振动机械的多刚体模型和动力学方程,假设机械的稳态工作频率恒定,求解动力学方程得到作用于偏重上的力矩表达式,表达式含有工作频率项和二次谐波项,结合偏重驱动电机的机械特性和系统的动力学方程分析表明,该类机械的稳态工作频率不是常数,而是以其二次谐波频率微幅波动,结论与工程测试结果一致;并提出要获得系统的精确解和进行启动过程的瞬态分析,必须建立机电耦合数学模型。
2) steady-state frequency
稳态频率
1.
In this method,the post-fault steady-state frequency (PFSSF) or approximate post-fault steady-state frequency (APFSSF) are taken as assessment index and the maximum post-fault fluctuant frequency" (MPFFF) as auxiliary index.
该方法以故障后稳态频率或近似故障后稳态频率为评估指标,并以最大故障后波动频率为辅助指标。
3) power-frequency steady-state
工频稳态
1.
The results show that normal-circuit is considerably accurate for lines of moderate length in power-frequency steady-state simulations.
结果表明进行工频稳态模拟时,在适当长度下,常规形电路模型是相当准确的。
4) succession operation life test
稳态工作
1.
A method for measuring and controlling the junction temperature of power transistor during succession operation life test is proposed.
为了在试验周期中了解晶体管的结温,提出一种在功率晶体管稳态工作寿命试验过程中结温的测量与控制方法。
5) working frequency
工作频率
1.
The dead oil NMR relaxation times are measured with two working frequency (2 MHz and 23 MHz) NMR spectrometers in this paper.
利用两种工作频率(2MHz和23MHz)的NMR谱分析仪器测量了不同粘度原油样品的NMR弛豫时间。
2.
With the study of the current methods of route multi identify in expressway,the problem of how to choose the working frequency in route identify system with RFID is researched.
结合高速公路多义性路径识别问题研究的实际情况,对采用RFID解决路径识别问题中工作频率的选择进行多方面的分析和探讨,通过分析不同频段的使用情况、现有技术的成熟度、各个频段产品现状及应用成本问题,对每个频段当前的可选择性进行比较分析,可为使用RFID解决路径识别问题中工作频率的选择提供思路。
3.
The results show that noise spectrum of ultrasonic cleaner has a broadband and contains largely high frequency components,and its basic frequency depends on the working frequency of ultrasonic cleaner.
结果表明,超声波清洗机的噪声频带较宽且以高频噪声为主,主频位于工作频率处。
6) operation frequency
工作频率
1.
In order to design high performance and reliability linear refrigerator compressors,the factors influencing the natural frequency of the linear compressor were analyzed theoretically,and experimental study on operating characteristics of different discharge pressure and operation frequency were conducted.
为了开发高性能、高可靠性的直线冰箱压缩机,从理论上分析了影响直线压缩机固有频率的因素,通过实验研究了直线压缩机在不同排气压力和工作频率下的工作特性。
2.
In order to increase the operation frequency of a pulse detonation rocket engine(PDRE),a PDRE model with solenoid valve was designed whose diameter and length was 30 mm and 1 000 mm respectively.
为了提高脉冲爆震火箭发动机的工作频率,设计了一台内径30 mm,长度1 000 mm的电磁阀式脉冲爆震火箭发动机模型。
补充资料：稳态
稳态
磁共振成像术语。磁共振成像中，经射频脉冲激励后的弛豫过程中使横向平面(Mxy)有残余矢量存在的状态。一般使用非常短的重复时间(TR)(22～50ms)，使TR短于组织的T1和T2值时，可使横向磁化矢量没有足够的时间去相。这样T2值比TR长的组织在横向即存有磁化矢量，藉之可形成组织间对比。这种技术常用于快速梯度回波成像。如SSFP(GE)，CE-FAST(Picker)，FISP(Siemens)等。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条