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。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。