有效功率

Transmission bands; ultimate gain; output-power; output voltage RMS

通频带；最大增益；功率输出；输出电压有效值

The control signals of the PWM rectifier are obtained by comparing the current of AC side with triangular wave (or saw-tooth wave) directly, which can implement the steadiness of the voltage of DC side and unit capacity factor of the system. At the same time, harmonic component of the system is abstracted through Instant Reactive Power Method, which can be smoothed by Integrated Learning Boost Converter Control.

本文采用重复学习Boost变换技术，利用滑模变结构控制技术对单相PWM整流器恒频Boost变换进行了分析，提出将交流侧电流直接与三角波相比较得到开关控制信号的方法，实现直流电压恒定不变及系统单位功率因数；同时，利用瞬时无功功率法分析系统谐波，并在谐波域内使用重复学习的控制方法，结合Boost变换技术，有效滤除系统谐波有功电流。

Based on the analysis of the temperature characteristics of SLD used in FOG,a new digital nonlinear temperature control method of SLD is designed.

引言超辐射二极管作为干涉型光纤陀螺的一种必需的光源，在光纤陀螺中得到广泛应用，它的输出功率高、光谱宽度宽以及相干长度短的特点，将有效的降低陀螺噪声。

The thicknesses of the layers between the active region and the ridge waveguide are optimized by taking into account the injected carrier distribution and local material gain in the SLD cross section.

考虑了注入载流子横向分布的不均匀，较准确地计算了模式增益。结果表明，通过对残留层和上光限制层厚度的优化，可以有效提高SLD与单模光纤的耦合功率。

I am sure after a few weeks of adaptation and familiarization I will have no difficulty in functioning on a daily basis in an English speaking society or in participating fully in graduate studies.

在大学的三年的学习生活不仅给予我自身的充实，更重要的是磨练和培养了我较强的自觉能力和严谨，踏实的作风以及不怕困难的精神，对未来充满了信心！

As the first volcanoes erupted, one of the gases that bellowed out was steam.

在第一批火山喷发时，喷出的气体之一就是水蒸汽。