directivity的例句大全

There are many merits for focused liquid-filled spherical reflectors: email geometric size, high target strength, excellent frequency property, homogeneous directivity, low cost and easily placed in the sea.

充液聚焦球形反射体具有几何尺寸小、目标强度大、频率特性好、方向性均匀、成本低、海上布设方便等优点，是目前标准反射体中较好的一种。

Measurement of the directivity factor of a non-rotational symmetry electroacoustic device

非旋转对称电声器件的指向性因子测量

The effects of the rigid or free surface on acoustic power and radiation directivity radiated by a pulsating sphere are analytically studied.

数值结果表明：在低频和自由表面距离脉动球源较近时，自由表面的存在会大大地减小脉动球源的辐射声功率，自由表面对辐射声功率的影响可高达-40dB左右。

The results are as follows: The directivity of source time functions retrieved from P-and S-waves indicate that the nodal plane striking 199 ° is the fault plane, and that the earthquake ruptured unilaterally from the northeast to the southwest.

从P波和S波提取的震源时间函数的方向性效应都清楚地表明：走向为199°的节面为断层面，地震是从东北向西南方向的单侧破裂。

In this paper the general formulas on calculating far-field for the Vee Dipole Antenna at the space are derived from method of curvilinear integration and the field pattern, the radiation resistance and the directivity are given.

本文利用曲线积分的方法，导出了V型偶极子天线在空间任一点处远区场的一般数学表示式以及方向性函数、辐射电阻和方向性系数的计算式。

Resonant Freqency and Directivity Pattern of Free-flooded Cylindrical Transducer with Holed End-caps

带孔盖板的自由液浸式圆柱换能器的谐振频率和方向性

the new coupling structure has superior performances than traditional microstrip coupler for its good directivity and tight coupling by introducing a coupling capacitor. it is also easier to fabricate than lange coupler.

新的耦合器结构克服了传统微带耦合器耦合度低、方向性差的问题，也不需要Lange耦合器复杂的加工工艺，在平衡放大器、移相器和衰减器等场合具有广泛的应用。

we bring the directional antenna into indoor positioning and use directivity and penetration characteristic of it to enhance the location performance.

我们在室内定位中引入定向天线，利用定向天线的方向性和穿透能力强的特性来加强定位效果。

side to side directivity separation of antenna

天线侧向防卫度

bem of the directivity of magnetic dipole antenna

磁偶极子天线方向性的边界元解法

additional sound transmission loss resulting from directivity in the vertical plane of a receptive array

接收基阵垂直指向性引起的附加声传播损失

in the long period range, the spectral acceleration of motions with fling step is generally larger than that with forward directivity.

而在长周期段，含滑冲效应地震动的谱加速度大于含破裂向前方向性效应的谱加速度值。

The higher the acoustic frequency is, the stronger its directivity is.

而且所有声频均有指向性,声频愈高, 指向性愈强.

This is an Academia Sinica directivity innovation project part of research content.

这是中科院方向性创新项目的一部分研究内容.

No obvious directivity occurs in the songs of black cicada.

黑蝉鸣声的波形结构无明显的方向性.

The course evaluation of ideological cultivation should obey the Principles of directivity , development, and integration.

思想品德课程评价要坚持方向性原则、发展性原则 、 整体性原则.

Impedance, Gain, Radiation pattern, Beam width , Radiation resistance, Antenna efficiency, Directivity and Polarization Measurements.

天线测量阻抗, 增益, 辐射模式, 梁宽,抗辐射, 天线效率, 指向性和极化测量.

I am so ashamed of confusing the two concept: directivity pattern and directivity coefficient.

I感到很混淆这两个概念: 指向模式和方向性系数惭愧.

The inheritance that its performance grows in dimensional productivity, directivity, acceleration and internationally 4 respects.

它表现在空间生产力发展的继承性 、 指向性 、 加速性和国际性四个方面.

The principles include directivity, scientific nature, characteristic, stability, and pertinence.

遵循的原则有:方向性 、 科学性 、 系统性 、 稳定性 、 针对性原则.