directivity
n. 方向性
近义词：directiveness，directionality，
英英释义
Noun
- the property of a microphone or antenna of being more sensitive in one direction than in another;
"the antenna received signals with no directivity"
- the quality of being directive
例句
用作名词(n.)
- The antenna received signals with no directivity.那种天线可接受没有方向性的信号。