nearadj.近的；近似的；亲近的；吝啬的adv.在附近；不久以后；几乎；[罕]吝啬地prep.附近；接近；临近；大约；(质量、大小等)相仿；濒临v.接近；靠近near sight近视

1. The physical stop which corresponds to the entrance window is then the required field stop.
   入射窗所对应的实物光阑就是所要求的场光阑。
2. Far field spatial intensity structures are result from the diffraction of sharing gratings.
   远场光强的空间结构是由共享光栅组合衍射引起的。