directional antenna[电讯] 定向天线;指向天线;定向接收天线
Directional Blur方向模糊;具有方向性的模糊;定向模糊;方向模糊滤镜
directional lighting方向性照明;定向照明;定向照明定向照明;方向照明
directional training代培
directional stability[航] 方向稳定性;航向稳定性;航向保持性
directional stop定向限位架;限位架;定向限为架
directional sign路线指示标志;定向信号;方向标志;指路标志
directional airflow定向气流;或定向流
directional diagram[数] 方向图;翻译;方位图
ADJ（形容词） If something such as a radio antenna, microphone, or loudspeaker is directional, it works most effectively in one direction, rather than equally in all directions at once. (广播天线、麦克风或扬声器)定向型的 [技术]
Unless he was equipped with a directional microphone, he was out of earshot.
除非给他配备一个定向扬声器，否则谁也听不见他。
ADJ（形容词） Directional means relating to the direction in which something is pointing or going. 方向的 [技术] [usu ADJ n]
Jets of compressed air gave the aircraft lateral and directional stability.
压缩气体喷流从侧面和正面稳定了机身。