查询词典 directivity

The Airy function is used to calculate the plasma impedance and the grill-plasma scattering matrix is deduced, then the coupling properties of the HT-7 LHCD MJ launcher are studied with the antenna scattering matrix and the grill-plasma scattering matrix based on the liner coupling theory. The average power reflection coefficient, directivity, power spectrum are obtained for different edge plasma densities and for different phasings between main waveguides.

采用线型耦合理论，用艾黎函数计算了等离子体阻抗，推导出常规波导阵对等离子体的散射矩阵，并利用它和天线自身的散射矩阵研究了HT-7装置低杂波多结波导阵天线的耦合特性；计算了其平均功率反射系数、方向性系数和功率谱与等离子体边缘密度和主波导相位差等参数的关系。

In addition, the backscattering directivity, frequency dependent characteristics of the target strength and the contribution of swimbladder to the composite target strength of anchovy are analyzed and discussed.

另外还对鲜鱼的反向散射指向性特征、目标强度的频率特征以及鱼鳔对鳀鱼整体目标强度的贡献等进行了分析与讨论。

A Beijing company Chief Investment Officer believed that the home rescues the city and the US rescues the city not to be dissimilar, the home is not rescuing a concrete company, but does not have the directivity.

北京一家公司投资总监认为，国内救市和美国救市不一样，国内不是在救一家具体的公司，而是没有方向性。

In Chapter 2, a simplified analytical model is presented for the analysis of the BVI mechanism, adopting the Beddoes' prescribed wake model. By this model, the azimuthal location and miss-distance of the BVI and the radiation directivity of the BVI noise are calculated and discussed, and some conclusions are obtained.

在第二章，使用Beddoes预定尾迹模型，建立了一个用于旋翼桨-涡干扰特性机理分析的简化数学模型，分别对旋翼桨-涡干扰位置、桨-涡干扰距离和声辐射方向性等进行了计算和分析，得出了有意义的结果。

In addition to the cardioid directivity, it also allows to record in omni or bidirectional mode with a simple switch and thus adapting it to different recording situations.

除了心型指向型之外，通过扳动开关可以选择全指向型和8字型。因此，这款话筒可以适合多种录音环境。

In this paper, a closed chamber technique for measuring the complex free field sensitivity and directivity patterns of line array is described.

本文提出了一种在密闭管中测量线阵的自由场复数灵敏度和指向性图的方法。

Among them 3 kinds of pattern are more familiar, it is mode of forum public relations, the small number of people gives out gigantic voice through occupying the platform such as forum, BBS by force, flooded popular true sound; 2 it is the network shoves a hand, prove through plan and lack but the operation with apparent directivity, the purpose; that achieves attack competitor or information to distribute searchs engine the 3rd kind namely, the search engine that holds market dominant position often screen inimical or the website that does not pay, put the content that with oneself interest positive closes in search result front row, one when intervene the practice that searchs a result made industry goes regular.

其中三种模式比较常见，一是论坛公关模式，少数人通过霸占论坛、BBS等平台发出巨大的声音，淹没了大众的真正声音；二是网络推手，通过策划以及缺乏论证但是指向性明显的操作，达到攻击竞争对手或信息散布的目的；第三种就是搜索引擎，占据市场优势的搜索引擎往往屏蔽不友善或不付钱的网站，并将与自己利益正相关的内容放在搜索结果前列，干预搜索结果的做法成为了业界的一条潜规则。

This problem to us, directivity is very clear.

更重要的是，在提出问题的同时，我们已经备好了答案。

Simulated results show that the directivity and the gain of the array are improved.

模拟结果表明，天线阵的方向性以及增益都得到了加强。

The source time function directivity is in accordance with the P waveform directivity, clearly showing that the nodal plane of strike 199° is the fault plane and that the earthquake ruptured unilaterally from the northeast to the southwest.

震源时间函数的这种方向性效应与P波的方向性效应相一致，清楚地表明：走向为199°的节面为断层面，地震是从东北向西南方向单侧破裂的。

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。