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Similar to the FM interference, IF interference appears occasionally and its amplitude varies unstably.

与调频干扰相似，载波幅度不稳定，干扰间或出现。

The result obtained from the estimation demonstrates that the estimation harmonic frequency, amplitude and phase are very accurate using the improved algorithm for the analysis of an unsynchronized sample sequence.

实验结果表明：该算法较FFT算法在频率、幅值和相位的估计值精度上有明显提高。

A character-codes model based pattern recognition method by using amplitude data of targets frequency response is proposed after the establishment of high frequency response equation of radar targets. The method uses the same unvariant character-codes to express the same target of different angles and uses sequential separating of regions of target's reference variables to obtain multiple coding vectors of all regions for every target. The category and pose of target can be determined after a two-staged classification processing such as coding processing of target range profile data and errors correcting processing of coded data. The two-stage classification results are used to target identification as posterior hypothesis to be tested by sufficient convincing and necessary convincing. The character-codes model based pattern recognition method is also adaptive to variation of target angles and controllable in error probability. Time-consuming and complicated iterative computation is not necessary in the train process of pattern recognition.

首先建立了雷达目标的高频频率响应方程，这种方程将目标多散射中心理论与目标局部谐振理论有机地结合起来；进而提出了目标多频响应结构成像方法，这种方法将瑞利区频率响应或谐振区频率响应曲线的不同部位用各种不同的近似方法去逼近，通过特征谱估计方法将目标的局部频响特征与宽带距离响应特征结合起来；然后提出了一种基于姿态角变化区域的序贯划分与多模匹配的特征编码识别方法，这种方法具有能适应目标姿态角的变化以及能控制识别的差错概率α等优点，在目标识别时只需要目标在少数有限个频率激励下的幅频响应数据。

The improvement of the main switch and the discharge chamber was also conducted, that leads to increasing the discharge current amplitude and restraining the unwished discharge paths.

最后对主开关和放电室进行了改进，提高了放电电流的幅值，抑制了放电室中的旁路放电，提高了装置的性能。

A bipolar pulse gener AT or with A valanche Transistor is introduced which uses two paralleled tubes to enhance the amplitude of the output pulse. Meanwhile the power supply voltage can be adjusted, so better synchronous triggering can be performed.

介绍了一种双极性雪崩三极管脉冲产生器电路；电路采用双管并联以增大输出脉冲的幅度，并采用调节电源电压的方法来达到良好的同步触发。

By analyzing the equivalent network model, a new method with the resonant frequency of six strange points on the amplitude plot and phase plot of transmission coefficient S21 for computing the coupling coefficient has also been proposed in the thesis.The full-wave EM simulation has verified validness of the method by utilizing the models, which has been established with HFSS.

通过等效网络的理论分析，提出利用传输系数幅度曲线和相位曲线上的六个奇异点对应的谐振频率计算耦合系数的方法，并用HFSS建立模型，通过全波仿真计算验证了上述方法。

Seedlings of Vallisneria natans were planted in waters with different turbidities of 30 NTU, 60 NTU and 90 NTU. Such turbidities were made by mud and sand particles below 100μm in diameter. Photosynthetic fluorescence characteristics were measured by a developed submersible pulse-amplitude modulated fluorometer, Diving-PAM.

用粒径小于100μm的泥沙分别配置浊度为30、60和90NTU的浑浊水体，将苦草幼苗种植于上述水体中，测定幼苗的叶片长和叶片数，并利用水下饱和脉冲荧光仪测定幼苗的光合荧光特性，研究在不同浊度水体中水下光强对苦草幼苗生长的影响。

The vasomotion frequency and amplitude was positivelycorrelated with CPB flow rate.

血管运动频率和幅度与 CPB 流速呈正相关。

Simulation experiments' data show that by using this methods it can precisely generate non Gaussian correlate random sequence with specified probability density and power spectrum,and reproduce verisimilarly the scatter coherent video signal of radar sea clutter containing both amplitude and phase.

其中迭代算法用来计算非线性变换过程中高斯序列相关性的变化，而随机向量法用来完成线性变换，仿真实验数据证明利用这种方法可精确地产生具有指定概率密度和功率谱的非高斯随机序列，逼真地复现既包含振幅又包含相位的雷达海杂波相干视频散射信号。

This paper intrdouces how to measure the vibration of the rigid rotor by using digital laser vibrometer,and analyzes the calculation method of the amplitude and angle of the dynamic unbalance.

介绍了采用激光干涉仪测量刚性转子运转时支撑上振动信号的原理，并简要分析了刚性转子动不平衡量的提取和解算技术。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。