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primary frequency supply 主频率供给
The practices of primary frequency modulation, OPC and FCB in Baosteel Power Plant were reviewed to explain the function of plant control in alleviating system failure. 就一次调频、OPC、FCB等电厂控制方案在上海宝钢电厂的实践展开讨论,以说明完善的电厂控制可减轻电网故障程度。
A novel pulse plasma light source stimulated by a pulsed sinusoidal high frequency supply is reported,and a commercial PS plate is successfully exposed. 本文报道了一套采用正弦脉冲高频电源激励的新型氮气等离子体光源,首次获得了光源的准脉冲输出,并成功的对一种超感度PS版进行了曝光。
In view of serious insufficiency in primary frequency in Sino-Foreign Joint Venture Hefei No.2 Power Plant, the program of primary frequency is retrofitted. 摘要针对中外合资合肥第二发电厂1%23机组一次调频功能出现的一些问题，对一次调频程序进行了优化。
Combining the branching error with the interruption handling as well as reducing the logic complexity are good for realizing and increasing the primary frequency. 同时因为将分支错误与中断处理结合起来，又减少了逻辑的复杂度，更利于实现和提高主频。
In order to reinforce the frequency stability of Yunnan power grid, the update and field tests of generator primary frequency control function have been carried out since 2005. 为提高云南电网频率稳定性,从2005年开始,并网发电机组的一次调频功能规范完善工作逐渐展开。
The conclusions are (1) The scale factor of frequency between large and small perspex model test accord with similitude law basically. The error of primary frequency is 2.7% or 4.1%, the error of the second frequency is 0 or 6.05%. 得到了以下结论:(1)大小模型频率符合相似律;一阶频率误差为2.;7%25、4
Research on Primary Frequency Modulation Loop 一次调频回路的探讨
primary frequency control system 一次调频系统
primary frequency modulation function 一次调频
Auxiliary Primary Frequency Regulator (APFR) 辅助一次调频
primary frequency regulation (PFR) 一次调频
DC high-voltage stabilized power source with medium frequency supply 中频供电高压直流稳压电源
The disease is still in its primary stage. 这疾病仍然在初发阶段。
The little boy left primary school at eleven. 这个小男孩十一岁时小学毕业。
Sure. We are friends since primary school. 当然，我们从小学就是朋友了。
I started primary school when I was 5 years old. 我五岁时开始读小学。
A primary cause of Tom's failure is his laziness. 懒惰是汤姆失败的主要原因之一。
Primary school teachers use a lot of visual aids. 小学教师使用大量的视觉教具。
Love and hatred are primary emotions. 爱和恨是基本的情感。