蓝宝石窗口，光学性能稳定；
该组合物具有良好的光学性能、流动性、稳定性和机械性能。
The composition possess good optical properties, flow, stability and mechanical property.
对俄罗斯parus—98 E光电桅杆的基本性能、光学系统原理和瞄准线稳定和控制作了深入说明。
Basic performance, optical system principle, line of sight stabilization and control of parus-98e optronic mast is further described.
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