a belt of charged particles (resulting from cosmic rays) above the Earth trapped by the Earth's magnetic field.
存在于地球磁场内由宇宙射线引起的围绕地球的高密度粒子放射带。
portable radioactive logging apparatus
携带式放射性测井仪
Research of RF Broadband LNA Based on SiGe BiCMOS Process;
SiGe BiCMOS射频宽带低噪声放大器技术研究
Development of RF Amplifier for 1.9-2.0GHz Band;
1.9-2.0GHz窄带射频放大器的研制
Adaptive Digital Predistortion Technology for RF Power Amplifiers;
射频功率放大器的数字自适应基带预失真技术
Adaptive Digital Predistortion Technology for RF Power Amplifiers
射频功率放大器的基带自适应预失真技术
Research on Spectral Bandwidth in Optical Parametric Amplification of Negative-Index Media
负折射率材料中光参变放大光谱带宽的研究
Multi-PD Sources Location by UWB RF Detection in Power Transformers
超宽带射频技术对变压器多局部放电源的定位
Design and implement of a program controlled gain broad band radio frequency amplifier
一种程控增益宽带射频放大器的设计与实现
Portable flamethrowers are carried on the Backs of ground troops; larger units may be installed on tank turrets.
可携带的放射器(由陆军部队背着),较大和重的放射器装置在坦克的炮塔上。
Radiographer (DR)
放射技师（放射诊断）
Radiographer (RT)
放射技师（放射治疗）
The intensity of a radioactive source.
放射性放射原的强度
To send out rays or waves.
放射，辐射发出射线或波
an antibiotic obtained from an actinomycete and used to treat infections by gram-positive bacteria.
从放射菌类提取的用来治疗由阳性鹰嘴豆细菌带来的传染
Alpha particles are positively charged helium nuclei obtained from natural radioactive decay.
α粒子是从天然放射性蜕变得到的带正电的氦核。
Radioactive and other hazardous materials present health and safety problems in increasing numbers of countries.
放射性及其它有害物质将给越来越多的国家带来健康和安全问题。
Modeling and Predistortion Method for RF Power Amplifiers with Memory in Broadband Communications;
宽带通信中有记忆射频功率放大器的建模与预失真方法