1) diagonal transparent cross
透明对角交叉线(聚焦屏)
2) cross focus X ray tube
交叉聚焦X射线管
4) picture diagonal
图象对角线;屏面对角线
5) focal lens antenna
聚焦透镜天线
1.
An analytical method was presented to calculate the focal spot size of the focal lens antenna.
根据惠更斯-菲涅耳原理,通过简单的推导,得出聚焦透镜天线焦平面上焦斑宽度的近似计算公式,并讨论了与焦平面平行的平面上的焦斑场。
6) spot-focusing lens antenna
点聚焦透镜天线
1.
In this paper, a spot-focusing lens antenna operating at 8 mm frequency band is designed according to the measurement of the density of the plasma.
根据等离子体密度的测量要求,设计了一种工作于8mm频段的点聚焦透镜天线。
2.
Aiming at the deficiency of validity of catching targets in single beam spot-focusing lens antenna, applying to ballistic wake microwave interferometer, a multi-beam spot-focusing lens antenna is mainly considered to design in this paper to augment the range of catching and enhance probability of hitting the target.
本文采用将高斯波束法,射线追迹和矢量衍射积分相结合的方法来分析单波束的点聚焦透镜天线。
补充资料：聚焦屏
聚焦屏
focusing screen
对焦玻璃的别称，
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