例句與造句

1. This is achieved experimentally by focusing the selector aperture on the final screen using the diffraction lens , which is most accurately done after removing the objective aperture , and then ( after replacing the objective aperture ) focusing the specimen using the objective lens only
   這已經(jīng)通過使用衍射透鏡在最終屏幕上聚焦選擇孔實驗性的完成，此方法多數(shù)能在移動目標孔后準確完成，然后（重置目標孔后）僅通過目標透鏡聚焦樣本。
2. It's difficult to find objective aperture in a sentence. 用objective aperture造句挺難的