The results showed that the suitable holding temperature was the peak temperature (350～500℃) at which more free radicals was produced rapidly, so more oil was formed and the hydrogen utilization efficiency was increased. The cleavage of organic functional groups of semi-coke from HyPy was mostly affected by the pyrolysis temperature, the effect of retention is changing the product distribution through stabilization of the free radicals and hydrogenation of the heavier products. In the holding process at the low temperature, the hydrogen preferred to be combined with oxygen-contained group to form phenols, avoiding the water formation reaction at high temperature.
研究发现：停留温度应选在煤热解产生自由基最多的温度范围，即350～500℃，此时生成更多的油品而使氢气的有效利用率最大；加氢热解半焦的化学官能团的断裂主要与热解温度有关，停留过程只是通过对热解产生的自由基稳定化并对较重的热解产物进一步加氢而改变了产品的分布与组成；低温下的停留过程使得气体中的氢优先与煤中的含氧官能团结合而生成酚类，避免了在更高温度下生成水的反应。
Quantum-well laser with two active layers integrated by tunnel junction materials was grown, the peak wavelength is 918.2nm. Measurements show that the device has a threshold current of 230 mA, the slop efficiency of 0.93W/A without coating, about double of traditional laser.
制备了双有源区级联结构的量子阱激光器，激射波长918.2nm，器件阈值电流为230mA，未镀镆情况下斜率效率达0.93W/A，约为普通激光器的两倍。
For modern communication system, in order to save spectrum resources and boost spectrum efficiency, some kinds of complex digital modulation are used, for example QPSK, QAM, OFDM, which are not constant envelop modulation. Furthermore the peak to average power ratio is very big. Taking WCDMA for example, PAR is 6～9dB at 0.01%probability on the CCDF.
由于现代通信系统为了提高频谱利用率，采用了各种复杂的数字调制技术QPSK，QAM，OFDM，这些都是非恒定包络的调制方式，并且峰值和平均值相差较大，通常功率放大器采用功率回退的方法来达到线性度的提升，但是随着功率的回退，放大器的功率附加效率也会大大的降低。
In these methods, one is signal recover on some little points of the pulse wave in sampling very narrow signal, It help to acquire the peak value of the pulse; To improve the method of traditional balance adjusting on hardware, design software balance method, spare the four precision amplify circuits, improve the precision and stabilization of the balance adjusting. In traditional detector measure method, it need to adjust the detector to a fiducial position precisely in 3D directions, it waste time and energy of worker, in the thesis, the author use Neural Network calculation method, it can measure the off-focus value in despite of detector fixing error, improve the measurement efficiency four-quadrant photoelectric detector.
其中，针对瞬态极窄脉冲的采样，提出了信号重构算法，在脉冲采样点较少的情况下完成对脉冲信号的重构，求取脉冲峰值；相比通用的四象限通道硬件电路平衡校正方法，提出了软件平衡校正算法，节省了四路精密放大电路系统，提高了通道平衡校正的精度和稳定性；传统检测技术中需要将四象限探测器在三维方向精细调整到基准状态后才能检测，费时费力，文中提出了采用人工神经网络算法，可以在有安装偏差的情况下直接判读探测器离焦量值，提高了产品的检测效率。
Peak performance can be obtained thanks to the rotor wear adjustment system, thereby maintaining the high volumetric efficiency of the pump.
正是由于转子的自然磨损调节体系，泵送系统才能达到最佳工作状态，因而维护了泵的高容积效率。
There is a response peak at about 810 nm with a spectral width of 20 nm, and the peak quantum efficiency is about 11%.
器件在810 nm附近的响应峰的3 dB谱线宽度约为20 nm，最大量子效率约为11％。
The results indicated that by increasing pulse peak voltage, pulse frequency, number of electrodes, residence time and decreasing initial concentrations, the conversion efficiencies can be improved. High air humidity played an important role in SO2 conversion efficiency.
实验结果表明，提高脉冲峰值电压、脉冲频率、脉冲放电电极数目，延长停留时间，降低气体初始浓度有助于提高NO、SO2的转化效率；增加空气湿度可以显著提高SO2的转化效率。
Efficiency is one of the most important characteristics in switching power system. The premise of getting high efficiency is the accurate control to the on-time and off-time of the switch. So, the demand to the comparator block for peak detector in switching power system becomes more and more.
效率是开关电源系统中最重要的特性之一，而取得高效率的前提是对开关管导通关断的时间的精确控制，因此，对于检测峰值电压或峰值电流的比较器模块的要求也变得越来越高。
The efficiency includes the total energy peak, single escape and double escape peaks.
在计算23.8MeV的高能γ峰面积时，采用了创新的本底拟合扣除法。
The OPI1268 optoisolator combines a high efficiency GaAlAs LED with a peak wavelength of 850nm, optically coupled to a Photologic photodiode in the output IC.
OPI1268光隔离器集成了高效率的GaAIAsLED，峰值波长为850nm，光学连接在输出集成电路的光电逻辑光电二极管上。
With the optimal buffer and the increase of ionic strength, significant improvement in peak shape of antibiotics could be achieved and consequently a decrease in the tailing factor, an increase in the apparent column efficiency as well as an efficient resolution were obtained.
选择合适的缓冲盐并适当地增加流动相的离子强度即可显著改善抗生素的色谱峰形，色谱峰的拖尾因子及峰宽均随之降低，同时被测物与有关物质间也更加易于分离。
Results indicated that for severe eutrophicated water body, the removal efficiencies of turbidity, COD and TP were about 80%, 30% and 24%, respectively. The concentration of NH+4-N in effulent was always below 0.5 mg/L and the removal efficiency was beyond 90%. The peak of NO-2-N appeared in 9th day (4.98 mg/L), and then decreased quickly. The change tendency of NO-3-N concentration in effluent was coincident with the change of NH+4-N in influent in the end of the experiment and it meant the biofilm amature.
结果表明，对于富营养化水体，生物沸石滤池对浊度、COD和TP的去除率分别约为80%、30%和24%；出水NH+4-N始终保持在0.5 mg/L以下，去除率在90%以上；NO-2-N出现峰值（4.98 mg/L，第9 d），第13 d后即一直低于进水值；实验后期出水NO-3-N与进水NH+4-N变化趋势基本一致，表明硝化生物膜已成熟，原位再生可行；生物沸石床内可能存在同步硝化反硝化现象。
It was got that parameters influencing on current and the relationship between current peak value and slope control time in starting process by slope voltage, and the definition of motor starting efficiency was proposed.
通过分析得到采用斜坡电压控制策略时影响起动电流的参数和电流峰值与斜坡控制时间的关系，同时提出了电动机的起动效率概念。
Thanks to the relatively high atomic number, high density and wide band-gap, CZT detector possesses sharp energy resolution and high detection efficiency without cryogenic cooling. A prototype planar CZT detector with sensitive volume of Φ 8mm×1.7mm has been fabricated and the gamma-ray spectra of 241Am were obtained. At room temperature (22℃) and for the 59.54keV peak, the FWHM can achieve 2.06keV, while no polarization is observed and stability is very satisfactory.
我们实验室已制成Φ8×17立方公厘灵敏体积的CZT探测器，室温22℃下对241Am放射源、59.54keV能量的γ射线能量分辨率可以达到／2.06keV，连续测量没有极化效应，并且具有很好的长期稳定性。
Since this is essentially a water pumping system, standing column well design requires critical considerations to obtain peak operating efficiency.
由于这是本质上是一个抽水系统，以及设计要求站在列的关键因素，以获得最高的运行效率。
Experimental results show that the HCl removal efficiency of the cyclone scrubber ranges from 25% to 55% when n: n stoichiometric ratio is around 2 and the peak efficiency appears at around 650℃; the dust collection efficiency of limes and their reaction products from HCl adsorption is around 50%~98% with lower values at higher temperatures, and they are higher than 70% when temperature is below 650℃.
研究表明：该系统在n/n为2左右时，石灰对HCl气体的净化效率为25%~55%，并在650℃左右出现峰值；石灰及其反应产物的收尘效率在50%~98%范围内变动并且随温度升高而下降，在650℃以下，收尘效率均高于70%。
You can`t concentrate at peak efficiency continuously, so be sure to take breaks.
你不能一刻不停的做工作，那样你会达到一种极限，适当的休息一下。
Second, comparing to the axial virtual cathode oscillator, the coaxial virtual cathode oscillator has been studied by PIC simulation method in detail. With the conclusion of the principle of the coaxial virtual cathode oscillator, we has brought forward one new kind of coaxial virtual cathode—radial three-cavity coaxial virtual cathode oscillator whose peak period-averaged power reaches 2.45 GW and the beam-wave conversion efficiency is about 12%. The output microwave has high mode purity and narrow bandwidth.
二、以轴向虚阴极振荡器为参照，对同轴虚阴极振荡器进行了较为细致的粒子模拟研究，并在总结同轴虚阴极振荡器产生微波机理的基础上，提出了一种全新的同轴虚阴极振荡器—径向三腔同轴虚阴极振荡器，其输出微波功率高达2.45GW，效率约为12％，较以往虚阴极振荡器大大提高，其输出微波频谱和模式也非常纯净。
No switching zone in one period by the proposed method; according to power factor angle, 120° no switching zone can be adjusted to be farthest located in the centre of the peak value region of the load current through adjusting the injected zero sequence voltage, hence, the switching loss can be greatly reduced and the efficiency of the system can be greatly improved.
二极管籍位型多电平逆变器应用较为广泛，但是在高压大功率的应用场合，二极管箱位型多电平逆变器的主电路拓扑和控制具有以下问题：直流母线侧各电容电压可能不平衡I1；箱位二极管数量过多；内部开关器件的间接箱位造成内部开关器件承受较
The peak intensity is enhanced by a factor of 16.Practical solid dye laser is developed using R6G:MPMMA as the gain medium, Slope efficiency is 21%.
以DCM：Alq和Perylene：PS为增益介质的波导结构的边发射激光器，在光泵浦下，观察到了由ASE机制引起的增益窄化现象。