当然，每个望远镜首先要考虑的是其光学表现。
Of course, the most important consideration of any telescope is the performance of its optics.
总的来说，我对这支双筒镜的光学表现印象深刻。
Overall, I'm quite impressed with the optics of this binocular.
由于金属纳米粒子与整体金属相比所表现出来的光学特性差异，使其成为全世界深入研究的目标。
Metal nanoparticles are the subject of intensive research efforts across the world, due to the differences in the optical properties they exhibit compared to bulk metals.
应用推荐