根据合同条款，DRS将提供LRAS3的关键组件，如集成光具座（IOB）、望远镜、车载支架（VMY）和烟囱组件。
Under the terms of the contract, DRS will provide key LRAS3 sub-assemblies such as Integrated Optical Benches (IOBs), Telescope/Afocals, Vehicle Mounted Yokes (VMYs), and Stovepipes.
从14个光栅中为每个“HR”光具座光谱仪选择光栅。
You choose from among 14 gratings for each "HR" Optical Bench spectrometer.
研究了经双凸透镜两个光具面 L_1和 L_2的透射光线和反射光线的近轴成像规律，以此说明其像群的形成。
The rule of adaxial image formation is studied, of the transmission light and reflected light through the two optical surfaces L_1 and L_2 of the biconvex lens.
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