英语词汇directional beam怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	directional beam
释义	directional beam directionalityn. 方向性；定向性 bidirectionaladj. 双向的；双向作用的 unidirectionaladj. 单向的 interjectionaladj. 叫声的；感叹词的 instructionaladj. 指导的,教育的 constructionaladj. 装配的,构造的,解释上的
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