基本解釋[經(jīng)濟(jì)學(xué)]螺旋型定向天線(xiàn)詞組短語(yǔ)短語(yǔ)helical -beam antenna 翻譯helical beam antenna更多詞組專(zhuān)業(yè)釋義經(jīng)濟(jì)學(xué)螺旋型定向天線(xiàn)