气动窗口是利用对激光基本无吸收的气体射流来维持激光束的输出和平衡激光腔与外界的压力差。
最后，分析讨论类透镜效应对自由旋气动窗口的设计所带来的限制条件。
At last the limit conditions of the FADW design originated from lens-like effect are discussed and analyzed.
自由旋涡气动窗口是利用流体微团作自由旋涡运动的离心力来平衡大气与光腔压力差，来作为高能激光束的输出窗口。
The free vortex aerodynamics window is used to be the window of high power laser beam, which takes advantage of the centripetal force of the free vortex motion of fluid.
本文提出了确定气动窗口所需自由旋涡气动特性的过程，讨论了特征线方法在非对称超音速喷管设计中的应用，该喷管被用来产生自由旋涡流动。
In this article the procedures are described for determining free vortex segment properties. Characteristics method is used to design nozzle which produces free vortex segment.
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