摆线减速器
cycloid speed reducers
Cycloidal reducer
cycloid ball planetary transmission
大扭矩低速减速器设计
Large Momont and Low Speed Reducer Design
C频带转发器天线
C-band transponder antenna
阿基米得螺线天线
Archimedian spiral antenna
antenna
Archimedian spiral
阿基米德螺线天线
Archimedian spiral antenna
粗圆柱线天线快速精确计算模型
efficient and accurate modeling for moderately thick cylindrical wire antenna