查询词典 antenna

I will soon take delivery of a new Uniden/Bearcat BX-785D 1,100-channel digital scanner, along with a very wideband discone antenna.

我不久将要取得一台新的UNIDEN/BEARCAT的BX-785D，有1100个频道的数字扫描接收机，配上一个有很宽的带宽的DISCONE天线。

It also has 4 IFF antenna dipoles across the top of the bedspring.

在天线顶端还有4组IFF偶极天线。

Figure 5: Stacked-dipole planar "bedspring" antenna.

图五：叠层偶极平面天线。

The Bernese 5.0 software is used to compute the precise orbits of the FORMOSAT-3 and GRACE satellites using the kinematic and reduced-dynamic methods based on zero-differenced GPS phases from these two satellites missions. This study concentrates on the effects of satellite attitude, GPS antenna phase center variation and center of mass.

本论文针对福尔摩沙卫星三号及GRACE卫星姿态、相位及质心影响精密定轨问题分别进行探讨，采用GPS相位观测资料以Bernese 5.0软体进行零次差减动力法及动态法计算轨道。

For example, in the design of antenna, it is always involve the imaginaries Bessel function, so these work are belonged to the base research work, but it is important.

本文对各向异性介质偶极天线辐射场的数值计算的研究以及各向异性介质波参数的数值计算的研究目前还没有文献系统介绍，但这些内容对进一步研究探地雷达辐射场的规律是必不可少的，尤其是传播常数，它在探地雷达的研究中仍然是一个非常重要的公式，对其的深入研究有利于对探地雷达资料的正确解释。

For example, karst topography is very approach this mode. We not only discuss the effect relation of dipole field in the mediator, but also in the property of antenna. Imaginaries Bessel function is involved in the process of discussion. because it is very important to the result.

钻孔雷达一般使用偶极天线，所以对偶极天线辐射场正反演问题的研究是目前的当务之急，它直接影响着对钻孔雷达资料的正确解释，对进一步研究钻孔雷达天线的有关特性及钻孔雷达的研制起着非常关键的作用。

We will mend the structure of the biconical antenna to weaken the reflection current on its surface.

本文介绍了无限长的双圆锥天线的工作原理，分析了不同锥角的有限长度单圆锥天线的宽带特性，总结了前人为改善圆锥天线的宽带特性所做的一些工作。

Design and experiment of high power ultra-wideband coaxial biconical antenna.

高功率超宽带同轴双锥喇叭天线的设计和实验。

Simulations based on finite integration method are carried out in a wide frequency range for a balanced feeding finite wide-angle biconical antenna and many results including input impedance and far fields are obtained.

利用基于有限积分法的电磁场仿真技术对平衡馈电的有限长宽角双锥天线作了计算，得到了天线在很宽频带内输入阻抗、远区辐射场与频率的关系曲线。

Finite wide-angle biconical antenna ; modal analysis ; finite integration ; input impedance

有限长宽角双锥天线；模式匹配；有限积分法；输入阻抗

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。