Aimed at the difficulty in calculating an electrically large size antenna by using MOM, a far zone approximate method based on MOM (MOM-FZ) was presented for calculating radar antenna pattern.
针对运用矩量法计算电大尺寸天线时遇到的严重困难，提出一种基于矩量法的计算天线远场的远区近似(MOM - FZ)方法。
The most difficulty in growing FZ-Si crystal lies on the capacity of high frequency generator and technological conditions in growing crystal.
大直径FZ硅单晶的拉制最大困难在于高频加热设备能力和成晶工艺条件。
It is introduced a puller applied to purification of rare earth (RE) material, according to the float zone (FZ) technics of crystal growing, interprets main structure and characteristic of the puller.
介绍了一种用于稀土金属提纯的单晶炉，根据区熔法提纯单晶的特殊工艺要求，分析了其主要结构及特点。
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