The amplitude and intensity analytic expressions for disk (sphere) and annular aperture Fresnel diffraction are given on the base of scalar diffraction theory.
在标量衍射理论的基础上，给出了圆屏(球)和圆环菲涅耳衍射的振幅及光强解析表达式。
The spectrum of amplitude modulated signal are two half magnitude spectrums of base band signal positive and negative shifted by a carrier or R. F. frequency.
调幅讯号之频谱为一半强度基频讯号之频谱分别正负位移一射频或载波之频率。
On the base of the amplitude and phase distribution derivated from the synthesis procedure, the radiation pattern is synthesized and the feed system for the phased array antenna is designed.
在综合求解阵列天线幅相分布的基础上，分析计算了阵列天线的辐射特性，设计了相控阵的馈电网络。
The total amplitude of anomaly is about 2mm (the base line of the short levelling is 26 meters).
总异常幅度约为2毫米左右（短水准基线为26米）。
An improved method is presented on the base of the study for the discrete-amplitude multi-resolution speech coding.
在对离散幅度多分辨率语音编码方案研究的基础上提出了改进算法。
Floating crane structure mainly include boom, amplitude varying wire rope, tied back wire rope, truss frame, A-frame, counterweight box, rotating machinery base, and rotary bearing structure.
浮吊结构包括臂架、变幅钢丝绳、系固钢丝绳、桁框架、人字架、配重箱、回转底盘总成及回转支承等部件。
When frequency is up to the base frequency, the amplitude of voltage vector is restricted constant.
但当频率上升到基频后，定子电压受到变频器最大输出电压的限制而不能进一步提高。
When frequency is up to the base frequency, the amplitude of voltage vector is restricted constant.
但当频率上升到基频后，定子电压受到变频器最大输出电压的限制而不能进一步提高。
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