查询词典 radio frequency

She used a cell phone several hours each day, and the room in which she worked contained transmitters that emitted radio-frequency radiation, she said.

她用手机几个小时，每天的房间内，她载发射机发出的无线电频率辐射，她说。

This depends on the precise radio-frequency of the 21-cm wavelength,or 1420 megacycles per second.

这种通讯联系要靠21厘米的波段，即每秒1420兆周的精确无线电频率。

Radio-frequency identification has the capability of tracking everything anywhere, anytime. Its emergence will definitely change people's life.

无线频率识别系统具有在任何时间、任何地点跟踪任何东西的能力，它的出现将会改变人们的生活。

Then,the preparation of plasma polymer films by radio-frequency sputtering from polymeric targets is introduced.

从导航的最底层可以看到与本文研究领域相同的文献，从上层导航可以浏览更多相关领域的文献。

Among of them, Radio-frequency ion source is in most wide used for the reasons of its high proton content, long life and reliable performance, etc.

其中，高频离子源以其很高的质子比（70％-90％）、长寿命和可靠的性能而得到了最广泛的应用。

A pivotable and retractable antenna contains mechanical and electrical components for connecting to, and matching the impedance of, radio frequency circuitry within an electronic device, such as a radiotelephone.

一种可转动及可收缩的天线包括用于在电子装置、如无线电话内与无线电频率电路连接及阻抗匹配的机械及电装置。

This article designs the read-write system based on Mifare Radio Frequency Card in VB environment.

针对常规IC卡读写系统的缺点与不足，设计出在VB环境下的非接触式射频IC卡读写系统。

The main work is as follows:(1) Using perturbation theory based on semiclassical closed-orbit theory, we discuss the photoabsorption spectra of Li Rydberg atom in radio frequency field.

主要进行了以下几方面的工作：(1)在半经典闭合轨道理论的基础上，用微扰论讨论了振荡射频场中里德堡原子的吸收谱。

A DC-5 GHz single-pole double-throw radio frequency micro-electro-mechanical systems switch that employs lateral metal-metal contacting is designed.

设计了一种基于横向金属接触的DC-5 GHz单刀双掷RF MEMS开关，该开关包括一套有限地共面波导传输线和左右摆动的悬臂梁。

A DC-5 GHz single-pole double-throw radio frequency micro-electro-mechanical systems switch that employs lateral metal-metal contacting is designed. It consists of a set of quasi-finite ground coplanar waveguide transmission lines and a left right swing cantilever beam.

设计了一种基于横向金属接触的DC-5 GHz单刀双掷RF MEMS开关，该开关包括一套有限地共面波导传输线和左右摆动的悬臂梁。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。