1) total radiation aperture control antenna
总辐射孔径控制天线
2) transmission aperture
辐射孔径
1.
By changing transmission aperture and adjusting delayed time of electric excitation signal applied to every transmission elements,not only can the variable focal length be obtained,but also the same acoustic power can be kept in every focusing position.
通过改变每个圆环的激励信号延迟时间和辐射孔径,实现动态聚焦,并且保持聚焦处声强度一致。
4) CRPA-Controlled Radiation Pattern Antenna
受控辐射天线
补充资料：管形总辐射表
管形总辐射表
tube-solarimeter
guanXing ZOng管形总辐射表fUSh6biaO (tube·solarimeter)对作物植株间辐射分布或透光率进行测定的仪器。用涂黑的温差电堆作为感受器，测定感受面上因辐射能产生的温差电流值，与绝对辐射仪器比较检定，得到换算系数，而求得辐射值。 (杨正明)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条