查询词典 spectrum

USB portable multi-channel analyzer software on the PC can be achieved on the information collected spectrum analysis, given a spectrum of related data with a high value.

USB便携式多通道分析仪的PC端软件，可以实现对采集信息的频谱分析，并且获得频谱图以及相关数据，具有极高的价值。

Power spectrum function, the use of detailed explanation for the analysis of power spectrum is critical.

详细说明：功率频谱函数的使用详细解释，对于分析功率频谱非常关键。

TO this end the possibility of applying SSB broadcasting to radio has been suggested in the psat as a means of alleviating the overcrowede broacast bands of the frequency spectrum. In 1979 the World Administrative Radio Conference passed a resolution to improve the untilisation of the spectrum by the future application of SSB broadcasting.

作为减轻广播波段频谱过分拥挤的手段，应用单边带进行无线电广播的最终可能性过去曾被推荐。1979年世界无线电行政大会通过了一个决议以将来应用单边带广播来改善频谱的利用。

By producing pseudorandom number series, we rectify the power spectrums of normal random inputs in the same shape as power spectrums of simulating signals. Through Laplace transformation, we can acquire the frequency response functions of rectifier. Two simulating examples were presented. The power spectrum curves based on one peak function model were almost coincided with the power spectrum curves of simulating loads shown in the figures. Simulating results of input loads had good accuracy. Creating a simulating method and program of input load in this paper was effective.

本文利用随机过程仿真的一般理论在已知随机载荷的分布特性、均值、方差和功率谱函数以后，实现随机载荷的计算机仿真，即利用仿真技术得到符合已知载荷的分布特性和功率谱特性的随机载荷的时间序列。1 产生伪随机数序列及分布整形采用乘同余法产生伪随机数的递推公式为[2 ] ：yi+1 =λyi ( 1 )式中M =2

Chemometric method were used to analyze UV spectrum of TCAS-heavy metal complex, pure UV spectrum of TCAS-heavy metal complex and TCAS-heavy metal complex distribution curves toward concentration of heavy metals in solution were gained. Finally, complex constants of TCAS towards Cu, Zn, Cd and Pb were got to be 9.79、8.72、6.87 and 5.00, respectively.

采用化学计量学分析TCAS络合重金属的紫外光谱，获得了TCAS－重金属络合物的纯紫外光谱，以及TCAS、TCAS－重金属络合物随重金属浓度变化的分布曲线，并最终解析得到TCAS与Cu、Zn、Cd和Pb的络合常数分别为9.79、8.72、6.87和5.00。

The key problems of software radio and direct sequence spread spectrum range used in high range radio fuze are discussed. The effects of doppler frequency and carrier's initial random phase are analyzed. A new direct sequence spread spectrum algorithm based on software radio is proposed, by using differential encoding and quadrature demodulating, the effects of doppler frequency and carrier's initial phase on the output of inference filter are eliminated successfully.

研究了软件无线电和直接扩频测距技术在大炸高无线电引信应用中的关键技术问题，分析了由于多普勒效应引起的载波频偏以及载波随机相位对测距的影响，提出了一种基于软件无线电的直接序列扩频解调算法，通过采用差分编码和正交解调的方法，消除了多普勒频偏和载波随机相位对测距的影响。

Radio spectrum measurement is an important application in the radio spectrum management field.

0引言无线频谱监测与管理是伴随着无线通信技术的进步而不断发展的。

The spectrum detection is one of the important steps in Cognitive Radio, and the cooperative spectrum detection is popular because of its good detection ability.

频谱检测技术是认知无线电中极其重要的环节，而协作式的频谱检测由于其良好的检测性能日益受到人们的关注。

The complex biological preservatives consisting of lysozyme and / or nisin possessed a good preserving effect on razor clam, with the combination of lysozyme and nisin better than the individual one, possibly because the condition of their application and anti-bacterial spectrum can supplement each other as to increase their anti-bacterial spectrum.Razor clam was hydrolyzed with four kinds of proteases including subtilisin, flavourzyme, bromelain and acid protease.

用溶菌酶、乳酸链球菌素等组成的复合生物保鲜剂处理，结合冷藏保鲜蛏肉，各保鲜剂组的总挥发性盐基氮和细菌总数增加速度均慢于普通冷藏的蛏肉，从色泽、弹性、气味、黏度等感官评定指标来看，保鲜效果也均明显优于普通冷藏，说明溶菌酶、NISIN等对蛏肉具有较好的防腐保鲜效果。

By projecting signals with different frequencies into the subspace I, the signal with the supply frequency has the maximum value. Consequently, in the spectrum of the reciprocal of the projecting value, the supply frequency component is cut off and the fault feature component emerges in the spectrum.

把不同频率的信号投影到子空间I，基频信号在该空间的投影将远大于其他的频率分量，因此在投影的倒数谱中，基频分量被抑制，凸显出了故障频率分量。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。