低功率

At present the main problem that the power electronic integration technology is faced with is how to make volume of module smaller, cheaper and more density of power, better capability of cooling, less parasitical parameter and applied in more situations.

目前混合封装电力电子集成技术面临的主要问题是如何将模块的体积做的更小，成本更低，功率密度更大，传热性能更好，寄生参数更小及满足更多的应用场合，而其中最主要的一个问题就是集成模块的散热问题。

Ower power of LHW heating was easy brought runway discharge and produce a mass of photoneutron.

HW加热功率较低时，易形成逃逸，产生大量的光中子。

Measurable range of low power factor of power.

可测量低功率因数范围的功率。

The simulation results show that the proper selection of sampling frequency numbers and time interval can keep the simulation process fast, efficient and precise, which overcome the shortcomings of long time cost and low precision in the traditional method.

仿真结果表明，适当选取采样频率点数与时间间隔，可以在保证模拟功率谱计算精度的同时，具有快速高效的特点，弥补了传统方法在模拟三维风速时耗时长、精度低的缺点。

Due to the bias linearization, the P1dB of 27 dBm is only 0.5 dB smaller than Psat, which is the record low to the best of our knowledge.

由於线性化偏压的关系，1 dB增益压缩点仅比饱合输出功率低0.5 dB，此为目前我们所知的最佳纪录。

It can be seen from above results this series of Gunn die has great potential both in working frequency and in output power capacity. Along with the improvement of semiconductor technique, their performance will be better. In the future, it is likely to realize a W-band low phase noise VCO on microstrip with the high Q-factor resonance referred to in our paper.

从测试结果可以看出，此系列体效应管芯片在工作频率和输出功率上均有较大的发展潜力，随着国内半导体工艺的发展，其性能也将得到进一步提高，结合文中所设计W频段高Q微带谐振器，将来有望在微带上实现W频段低相噪集成压控振荡器。

The effect of radio frequency power on the mechanical properties and wear resistance was studied.

结果表明：在射频功率较低的情况下薄膜为Cr2O3结构。

The Kalina cycle which uses ammonia-water mixture as the working-medium, has the characteristics of lower vaporization temperature and non-isothermal heat absorption. Therefore, the Kalina cycle is used in low temperature waste heat recovery based on introduction of operating principle. The primary parameters of Kalina and Rankine cycle are optimized by mean of genetic algorithm respectively, and the net output power of the two cycles is compared on the same condition.

卡林纳循环采用氨水混合物作为工质，具有气化温度低和非等温吸热的特点，因此，在简要介绍其工作原理的基础上将其应用于中低温余热回收，采用遗传算法对卡林纳循环和常规朗肯循环的主要参数进行了优化，在相同的余热条件下，比较了卡林纳循环和常规朗肯循环的净输出功率。

The technique made full use of the characteristic of PR controller which can realize zero steady-state error in AC input signal in stationary frame. In the method, the active and reactive current component in the vector control strategy were transformed in the stationary frame to achieve the objective of keeping the DC-link voltage constant, adjusting the power factor and decoupling the active and reactive power. Compared with conventional double close-loop proportional integral controller, the PR technique is better in harmonic compensation without the complex rotating frame transformation and the couple or feedback voltage which is easily influenced by temperature and circuit parameters. The control algorithm is easy to be realized while the robustness and power quality is improved.

该方法充分利用了PR控制器能够在静止坐标系下对交流输入信号无静差控制的优势，将矢量控制策略下的有功电流和无功电流分量转换到静止坐标系下进行调节，实现网侧变换器维持直流电压稳定和调节功率因数的控制任务和双馈电机有功、无功功率的解耦控制，与传统的双闭环PI控制相比，该策略无需繁琐的坐标旋转变换，不存在受温度及电路参数影响的耦合项和前馈补偿项，且易于实现对系统低次谐波电流的补偿，减小了控制算法实现难度，提高了控制系统的鲁棒性和电网电能质量。

This machine has the characteristics of wide use, smooth running, low power consumption, good cutting quality and no stop of reamer.

该机具有用途广泛、运转平稳、功率消耗低，切割质量好，不堵刀等优点。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。