查询词典 antenna array

To solve problem of electromagnetic pollution, a Ni-based composite shielding coating has been prepared based on the electromagnetic shielding principle. Nickel and metal fiber are used as composite fillers, and acrylic resin as binder. The coating is designed for use in some community antenna television nets and shielding workshops.

针对日益严重的电磁环境污染问题，根据电磁波屏蔽材料对电磁波作用原理，用镍粉和金属纤维作为复合填料，以丙烯酸树脂作粘结剂，按照涂料制备的方法，制备了一种能屏蔽电磁波的复合涂料。

Application: Community antenna, video frequency, closed circuit television supervisory system, conduction system and unidirectional control system or the high-frequency machine connecting or internal wiring.

公共天线、视频射频、闭路电视监控系统、传导系统及单向控制系统或是高频率机器之接线或内部配线等。

Though the emergence is later and its development in industrial aspect is slower in China, with the appearanceand development of cable-casting and Community Antenna Television, the capacity of making profits for Broadcasting Industry in China is stronger continuously, and the quotient by appropriating funds from central government dividing total income has been dropping constantly.

虽然起步晚、产业化发展慢，但随着有线广播电视和卫星电视的出现和发展，中国广电产业创收能力不断增强，财政拨款在总收入中的份额不断缩减。

This term originally stood for "community antenna television," reflecting the fact that the original cable systems carried only broadcast stations received off the air; however, as cable systems began to originate their own programming, the term evolved to mean Cable Television.

说明原来的电缆系统只用于转发接收到的无线电视信号。

The major purpose of this research is to design a 915MHz RFID tag antenna base on unique features of fractal geometry and complex conjugate matching concept.

摘要 本论文研究的目的，在於利用碎型特殊的特性，来设计工作在915MHz的共轭匹配RFID天线。

We can see those unique fractal features and complex conjugate matching concept are of great help for us to design a high efficiency RFID tag antenna in a really short period of time.

这些独特并且特殊的碎型特性及共轭匹配的观念帮助我们在很短的时间内设计出高效率的RFID天线。

Under complex conjugate matching between antenna and charge pump, the measured range can reach 4.3m with stable DC output voltage equal to 1.3V.

在电荷泵电路与电感耦合宽频天线输入阻抗为共轭匹配时，且直流输出电压为1.3V，其量测距离可以到达4.3m。

Microstrip patch antenna has been wildly used because of its own advantages, such as: low profile, light weight, easy fabrication, conformability to mounting hosts.

由于微带贴片天线特有的优点(剖面低、重量轻、易制作和容易做到与飞行器共形等)，在实际当中得到了广泛的应用。

So the research and analysis on conformal antenna is valuable in the fields of engineering and national defense.

因此，分析研究共形天线的特性具有极其重要的国防意义和工程价值。

Conformal microstrip antenna has been widely used in many fields for it has many advantages.

共形微带天线具有众多优点，已经在很多工程领域中得到广泛应用。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。