查询词典 radio-frequency spectrum

The dielectric relaxation is non-Debye dielectric relaxation when slow polarization effect cannot be neglected in the samples. And from low frequency to radio frequency, the complex ε of the samples is not consistent with Kramers-Kroning relation.

实验表明：介质中慢极化效应的存在使得其介电弛豫普遍都不是德拜型的；在超低频至射频的广阔频段，样品的复ε不满足Kramers-Kroning关系。

Moreover, the IGBT radio frequency amplification phenomena, can become relevant if the driver circuit generates high frequency conducted noise components, that can be transferred to the final stage and amplified, generating very high EMI levels.

此外，如果驱动电路产生的高频传导噪音被放大传递到末级，相应的IGBT射频放大现象可以产生更高的EMI。

Check your radio frequency with the proper operating frequency of the area or country.

请您确认您所在地区对於频率规定之相关法规，来选用适当的频率，避免与其他同好使用相同频率造成失控事件。

When net scale is expanding , because the limited of frequency souse ,frequency reusing radio will increase .

在网络规模不断扩大的情况下，由于频率资源的限制，频率复用度必然增加。

Since the superheterodyne receiver was invented, mixer has long been the research focus in communication and radio frequency circuit fields, which is the key component to realize the frequency translation.

自从超外差接收机的结构被提出以后，混频器作为其中实现频率搬移的关键部件一直都是通信和射频电路研究的热点。

This paper presents a low voltage, low power RF/analog front-end circuit for passive ultra high frequency radio frequency identification tags.

提出了一种适用于无源超高频射频识别标签的低电压低功耗射频／模拟前端电路。

ST company vice president holds Thierry Tingaud of general manager of rising market district concurrently to count product of electron of word multimedia, car and intelligence to get stuck in cite / wireless radio frequency identifies expresses when example,"In fact, meaning law semiconductor has made the whole world the number one supplier that the biggest machine carries box chip supplier and car on the head to use chip, the biggest supplier of the market of chip of ultrahigh frequency RFID that develops quickly still at the same time."

ST公司副总裁兼新兴市场地域总司理 Thierry Tingaud 在征引数字多媒体、汽车电子产物以及智能卡/无线射频识别的应用实例时暗示，"事实上，意法半导体已经成为寰球第一大机顶盒芯片供给商和车用芯片的头号供给商，同时仍是敏捷成长的超高频 RFID 芯片市场的最大供给商。"

Doppler frequency offsets in rapid mobile environments result in both the fast fading of radio channels and intercarrier interference in Orthogonal Frequency Division Multiplexing systems. In order to combat the impact of ICI on OFDM systems in fast fading channels, an ICI mitigation technique is proposed in this paper.

针对高速移动环境下多普勒频偏造成移动信道的快衰落和正交频分复用系统中子载波间干扰问题，提出了一种适合快衰落环境的OFDM系统子载波间干扰抑制算法。

The RF electricity of ice adopts radio frequency technique of the RF dual pole. The frequency can make the water element of the cell which at the certain depth shake at a high speed, it can produce the quantity of heat at 45-60℃ through the quick circumvolved friction. Because the collagen fibre is shrinked, the wrinkle can be tighted. Then the light pyrolysis stimulates collagen and elasticity fibre to become more and arrange once again so as to reach the function of dispelling wrinkle and shrinking pore.

冰电除皱系统采用RF双极射频技术，发射的频率可以在皮下的特定深度内使细胞内的水分子产生高速震动，通过这种高速的旋转摩擦从而产生热量45-60℃，胶原纤维收缩，即刻松弛的皮肤、皱纹被拉紧，随后，真皮层中产生的热效应使胶原增生、重新排列、数量增加，同时修复老化受损的胶原，达到即刻紧肤、长效除皱抗衰老的效果。

A radio receiver that combines a locally generated frequency with the carrier frequency to produce a supersonic signal that is demodulated and amplified.

能将当地频率和携带者的频率联合起来产生能解调和放大的超音频信号。

We got alerted a couple of times while we were down south that HETs were on the way to bring us back up north because things were going to go hot again, but it was just rumors.

南下的途中我们不只一次得到警告说重型装备运输车将拉着我们重新北上，因为局势正在变得重新紧张起来，但这只是谣传。

It's the one where they find the ghost in the salt mine.

这一集是演他们在盐矿找到鬼