查询词典 coaxial

Firstly, we research the Vlasov antenna with reflector mainly. A new method to calculate the radiation of the antenna is founded with Vectorial Theory of Diffraction, and the corresponding program is made. The reflective characters of Vlasov antenna are studied with Moment Methods, and the results show that the total reflected energy is less than 0.25%. The radiation patterns of the antenna are analyzed, and the formulas to estimate the wave beam parameters and to design the antenna are provided. The feasibility of radiating high-order modes by Vlasov antenna is also discussed and verified. The hermetization of the Vlasov antenna is researched and the results show that with such kinds of hermetization the antenna can work under gigawatt level. The design of the mode converter from TEM to TMoi is studied, which is useful when the TEM coaxial mode is radiated by Vlasov antenna. At last, the flared-end Vlasov antenna is also discussed.

在Vlasov天线方面：用矢量绕射理论建立了天线辐射场的计算模型并编写了计算程序，该程序计算结果在主瓣上与实验测量吻合良好，近旁瓣也基本一致；利用矩量法计算了天线的反射系数，表明该天线有较小的反射，总的能量反射小于0.25％；详细分析了天线的辐射特性，给出了天线辐射波束相关参数的估算公式和天线设计公式；进一步研究和论证了Vlasov天线辐射高阶轴对称模的可行性；对天线的密封方式和功率容量进行了讨论，结果表明在不需很大密封罩的情况下可以获得GW级的功率容量；为了用Vlasov天线辐射同轴TEM模，研究了TEM-TM_(01)模式转换器的设计，得到了一些基本规律；最后，介绍和分析了带有锥形喇叭的Vlasov天线。

A compact gigawatt relativistic backward wave oscillator with coaxial extractor is investigated using the KARAT 25 D particle simulation code.

设计了一种紧凑型、GW级同轴引出电子束相对论返波振荡器，利用KARAT 2.5维全电磁粒子模拟程序研究了器件内部束-波作用的物理过程。

The products are widely used in coaxial cables, RF cable, high-frequency signal transmission cable, power cable grounding line, shielding lines and telephone lines, control cables, and other fields in the communications, military, aerospace, computers, electronic components such as There is also broad field of science and technology.

本产品广泛应用于同轴电缆、射频电缆、高频信号传输电缆、电力电缆的接地线、屏蔽线及电话线、控制电缆等领域，在通信、军工、航空航天、电子计算机、电子元件等高科技领域也广泛存在。

The company's main products are ordinary Copper Clad Aluminum, specifications from 0.10-3.2 mm; braided copper coated aluminum-magnesium lines, from 0.10-0.25 mm specifications, performance, can be widely used in electromagnetic, inductance coil, coaxial cable , RF cable, leaked cable, high-frequency signal transmission cables and power cables, control cables, and other fields.

本公司主要产品有普通铜包铝线，规格从0.10-3.2毫米；编织铜包铝镁线，规格从0.10-0.25毫米，性能优异，可以广泛用于电磁、电感线圈、同轴电缆、射频电缆、泄露电缆、高频信号传输电缆及电力电缆、控制电缆等领域。

The company is specialized in producing high temperature Teflon wire and cable, high temperature high-voltage wires, Teflon RG series of high-frequency transmission lines and coaxial cable fluoride plastic high temperature electrical and electronic wiring harness.

公司是专业生产耐高温铁氟龙电线电缆、耐高温高电压电线、高频传输铁氟龙RG系列同轴电缆线以及氟塑料耐高温电子电器线束。

The main products of copper clad aluminum wire conductor with braided body with copper clad aluminum magnesium alloy wire, copper wire°ütin, steel°üenameled wire, as electric conductors material widely used with coaxial cable, high-frequency signal transmission cables, power cables, control cables, wire and special wire and other fields.

主要产品为导体用铜包铝线，编织体用铜包铝镁合金线、铜包铝镀锡线、钢包铝漆包线，作为电导体材料广泛应用与同轴电缆、高频信号传输电缆、电力电缆，控制电缆、电磁线和特殊漆包线等领域。

The printed UWB antenna is comprised of a planar monopole radiator and the ground plane which are connected to a coaxial cable to launch RF signals. This kind of ground and antenna system is essentially an unbalanced design, where electric currents are distributed on both radiator and ground plane, and then leakage to the outer conductor of the feeding cable. The impedance matching and radiation pattern will be influenced in the low band, which are our focus. Finally, some techniques will be proposed to reduce the cable effect on the antenna performance.

进行超宽频天线量测时，吾人会利用同轴缆线连接到网路分析仪，这时的同轴缆线不只是扮演一个传输讯号的工具而已，由於单极天线的不平衡结构，对低频而言，接地回流电流会泄漏到同轴接地的导体外部，造成同轴缆线也是一个辐射体，影响到天线低频时的阻抗匹配与辐射特性，因此本论文将探讨同轴缆线对於天线一些参数的影响，并研究提出解决的办法。

Three methods has been adopted for these wireless communications in MAGLEV, they are 38G millimeter, leakage coaxial line and radio induction technology.

目前磁浮列车采用的无线方式有三种，它们是38G毫米波、泄漏同轴电缆、无线感应技术。

On the basis of imaging principle of a coaxial spherical surface optical system, a new measuring method using glass capillary for the the refractive index of micro-quantity liquid was introduced.

介绍了一种用玻璃毛细管精确测量微量液体折射率的新方法。

PCs connect to the Thin Ethernet bus via a coaxial "T" connector.

个人电脑通过同轴&T&连接器连接瘦以太网。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。