单词 directional 释义 directional, a.|drknl|[f. prec. + -al1.]†1. Serving for direction or guidance: see quot. Obs.1612Sturtevant Metallica (1854) 67 Directional is that moddle which is made only to guide the Artificer in the dimensions of all the parts...
单词 directional 释义 directional adj of direction in space 方向的; 定向的 a directional aerial, ie one that transmits or receives radio signals in one direction only 定向天线. 英汉双解词典包含38652条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语...