峰值

Multicarrier and multicarrier CDMA systems are the candidates with a greatapplied foreground for future mobile communications system.Some keytechniques in the two kinds of systems,including the reduction of peak-averagepower ratio and so on,are studied in this dissertation.The main contents ofthe dissertation are as following:(1) The way to constitute a multicarrier signal by using any onecomplementary code from multiphase complementary code pair is proposed,andthe upper bound on crest factor for a multicarrier signal is studied.

多载波及其多载波CDMA系统是未来移动通信系统一种很有应用前景的侯选方案，本文针对这两种系统中的峰平功率比减小等关键技术进行了研究，主要内容包括：(1)提出了利用多相互补码对中任一互补码构成多载波信号的方法，研究了多载波信号峰值因子的上边界。

The power factor, energy efficiency, electronic loss, lumen/w. and crest factor of 2×36 W electroinc ballasts based on these two dimming methods are recoded and Compared over a wide dimming range.

在宽的调光范围内，记录并对比了基于这两种调光方法的2×36W电子镇流器的功率因数、能量效率、电子损耗、单位功率光通量以及峰值系数。

In this method, wavelet is used to extract fault characteristics and neural network is used to diagnose the faults; the inputs and outputs of the neural network are all memberships concretely, the inputs are the memberships of the crest factor, pulse factor, margin factor, bias factor, kurtosis factor and maximum spectrum on each characteristic domain, and the outputs are memberships of each fault.

即利用小波变换获取特征域，取特征域上的峰值因子、脉冲因子、裕度因子、偏态因子、峭度因子及频谱最大值作为神经网络的输入，并对神经网络的输入、输出进行模糊化处理，以神经网络进行诊断。

In order to acquire the largest extinction ratio of the converted signal in the cross gain modulation wavelength conversion, the signal wavelength λ pk,s should be longer than the small signal gain peak wavelength of the semiconductor optical amplifier.

增益调制型波长转换中，为得到转换后信号最大的消光比，信号光波长应该比半导体光放大器的小信号增益峰值波长长。

The results show that the mill current and particle filling increased with the coal feed flow when ventilation rate remained the same, mill current started to decline after rising to a peak, the beginning of the decline region corresponded to the optimal particle filling, at this point, the gap between balls were just full of coal particles, the mill was running close to maximum power, and grinding efficiency reached the highest.

研究结果表明，磨煤机通风量不变时，随着给煤量增加，磨内存煤量增加，磨煤机电流升高，电流上升到峰值后又有所下降，开始下降的区域对应的料位是最佳运行料位，此时，钢球间隙中刚好充满了煤粉颗粒，磨煤机接近最大功率运行，粉碎效率达到最高。

The peak current may exceed the current rating of the relay and cause welding of the contacts.

峰值电流可能超过继电器电流额定值，并导致触点被焊接在一起。

It is not our intention in this introductory text to purse this involved in a relaying algorithm, we discuss next one idea for peak current detection that is the function of a digital over current relay.

它不是在这个介绍的本文中的我们意图这积极参与的在一个继电器运算法则中，我们为在电流继电器上的数传功能的峰值电流检测然后讨论。

The rationality on the selection of shearing force formulae was discussed, and the cause of production and the overcoming technology on the peak value of shearing force in the initial stage of roll cutting were analyzed.

探讨了剪切力公式选取的合理性，并分析了滚切初期阶段剪切力峰值的产生原因与克服技术，在此基础上将二者融合到设计模块中，提高了优化设计的科学性。

Results showed that the diurnal variation of the maximal yield of PS11 photo- chemistry in dark-adapted leaves F(subscript v/F under light stress was a double-peak curve, and the peak values were at 8:00 and 15:00, respectively.

结果表明：光胁迫下的烤烟幼苗叶片原初光化学效率F(下标 v/F的日变化为双峰曲线，峰值分别出现在08：00和15：00左右，初始荧光(F0)上升。

Maximum value of ring-porous species-Fraxinus mandshurica , Fraxinus mandshurica , Phellodendron amurense, Quercus mongolica, semi ring-porous Juglans mandshurica, diffuse-porous Betula platyphylla, Tilia amurensis and non-porous Pinus sylvestris, Pinus koraiensis were as following: 430.53, 516. 36, 234. 00, 625. 93, 945. 83, 199. 49, 507. 93, 142. 43, 286. 21cm〓cm〓h〓 in diumal course during the growing season, The sap flow persisted after leaf senescence until the mid-October.

在生长季中环孔材水曲柳、水曲柳、黄波罗、蒙古栎树干液流密度日最大峰值分别为430.53（8月末）、516.36（9月中旬）、234.00（7月下旬）、625.93 cm〓cm〓h〓（9月初）；半环孔材胡桃楸为945.83 cm〓cm〓h〓；散孔材白桦和紫椴分别为199.49（9月上旬）、507.93 cm〓cm〓h〓（8月上旬）；针叶材樟子松、红松分别为142.43（7月中旬）、286.21cm〓cm〓h〓（7月下旬）。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。