These include enhanced emission of infrared (IR) radiation from the earthquake epicentre, as well as anomalies in low-frequency electric and magnetic
包括从地震震中传出来的经过加强的红外辐射，以及不正常的低频电磁现场数据。
Vacuum micro-electronics devices, which are based on field emission theory, are more and more widely applied, because of their low power consumption, high current density and high frequency.
以场致发射理论为基础的真空微电子器件，因其具有功耗低、电流密度大、频率高等诸多优点而倍受人们关注。
The PP-IP characteristics at low frequency high pulse current and the emission spectra at direct current have been investigated and analyzed.
研究和分析了它们在低频大电流脉冲注入下的Pp—Ip特性和直流注入下的光谱特性。
The physical mechanism about reflection of low-emission glass in near-infrared region is explained by using plasma cut-off frequency theory.
利用等离子体截止波长理论，解释了低辐射玻璃红外反射的物理机制。
Cloge detection system of pigging and extrusion tools is adopting very-low-frequency radiowave emission and reception.
清管及挤涂工具的阻卡探测系统是采用甚低频无线电波发射、接收。
Cloge detection system of pigging and extrusion tools is adopting very-low-frequency radiowave emission and reception.
清管及挤涂工具的阻卡探测系统是采用甚低频无线电波发射、接收。
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