射频衰减,RF attenuation
1)RF attenuation射频衰减
1.Improving measurement accuracy of low level signal is studied usingRF attenuation,resolution bandwidth,video bandwidth,and video average.研究了利用频谱仪射频衰减、分辨带宽、视频带宽和视频平均的方法,提高和改善低电平信号的测量精度。
2)RF Fixed Attenuator射频固定衰减器
3)RF Digital Attenuator射频数字衰减器
4)RF Voltage-controlled Attenuator射频压控衰减器
5)low-frequency attenuation低频衰减
英文短句/例句
1.Handheld microphones usually have their low frequencies intentionally rolled-off.手持话筒通常有意的做低频衰减。
2.The ensemble or instrument microphone works well at a distance because its bass response has not been rolled-off by the manufacturer.距离对乐器话筒的影响不是很大，因为它们在出厂的时候没有作低频衰减，比较平直。
3.Ground roll wave has characteristics of strong energy, low frequency and slow attenuation.面波具有能量强、频率低、吸收衰减缓慢等特点。
4.Measurement of the attenuation coefficient of surface acoustic wave by means of the light diffraction衍射法测量低频液体表面波的衰减系数
5.The rolloff is usually expressed as attenuation per unit interval, such as6 dB per octave.衰减截止频率通常被表示为单位音程的衰减，比如每一个八度降低6分贝。
6.video attenuator switch视频信号衰减器开关
7.dependency of attenuation on frequency衰减对频率的从属性
8.High attenuation to low frequency,excellent perform ance of common mode and differential mode interfere nce suppression.极佳的低频段衰减特性，具有良好的共模和差模干扰抑制性能。
9.In the stopband of an LPF with a6 dB/ octave slope, for example, every time the frequency doubles, the amount of attenuation increases by6 dB.例如，在低通滤波器的抑止频带，八度音程（分贝）率表示频率每翻一倍，衰减量就降6分贝。
10.under frequency load shedding低频率自动负载减少
11.Test method of attenuation stability for radio-frequency cablesGB/T4098.6-1983射频电缆衰减稳定性试验方法
12.Methods of measurement of attenuation constant for radio-frequency cablesGB/T4098.4-1983射频电缆衰减常数测量方法
13.Study of Rainfall Attenuation Characteristics of Ku-Band Satellite LinkKu频段卫星链路降雨衰减特性分析
14.Cloud and fog Attenuation for Ka-band Satellite Communication Satellite-earth LinkKa频段卫星通信地空链路的云雾衰减
15.Developing Low-grade and Depleting Oil and Gas Fields;促进对低品位和衰减期油气田的开发
16.The attenuation coefficient decreases with increasing of frequency and the gas density.衰减系数随频率增加而减小,并且随密度增加而减小.
17.Theory Analysis of Ring Laser Gyroscope Biassed by ATR Magnetic Mirror衰减全反射磁镜偏频激光陀螺的理论分析
18.Study of Characteristic of Electromagnetic Wave Attenuation in Frequency Domain in Coal-Rock Medium;煤岩介质电磁波衰减特性的频率域研究
相关短句/例句
RF Fixed Attenuator射频固定衰减器
3)RF Digital Attenuator射频数字衰减器
4)RF Voltage-controlled Attenuator射频压控衰减器
5)low-frequency attenuation低频衰减
6)anomalous attenuation选频衰减
1.An interesting point is that theanomalous attenuation.在强负跃层浅海的爆炸声实验中，发现当声源和接收器都位于跃层之上时，平均混响强度和某一航向的声传播损失在频率１０００－２０００Ｈｚ之间出现强烈的异常衰减现象，而且很有意思的是发射和接收均无指向性的平均混响强度的异常衰减与该航向声传播损失的异常衰减具有中心频率相同、带宽一致、附加衰减值相近的窄带共振或选频衰减特权。
延伸阅读
射频射频物理学术语。介于声波和红外线之间的波的频率。用于MR研究的射频常在兆赫兹(MHz)范围内。磁共振成像中，必须使用射频脉冲选择性激励特定层面的质子，以产生MR信号。
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