The absorbent was analysed by SEM and XRD and the magnetic alloy powder-paraffin sample was made a complex permeability measurement in the radarfrequency.
对吸收剂进行SEM与XRD分析，并对磁性合金粉体-石蜡样品进行雷达频带复磁导率的测试。
2
BAE Systems will develop a new radar warning receiver prototype that can identify radio frequency and communications activity in real time.
BAE系统公司将开发一种新型雷达预警接收机原型，该原型能实时识别无线电频率和通信活动。
3
Ten years later Spencer patents a "radar range" that cooks with high-frequency radio waves; that same year, the Tappan Stove Co. introduces the first home microwave model.