1)normal-angel objective,正常视场角物镜2)taking angle,物镜视角3)objective angular field,物镜视场4)field corrector,视场改正镜5)opening of the telescope,望远镜视场角6)camera angle,摄影机物镜视角
用法例句
Research on the field corrector design for the R-C system of the large telescope Cassegrain focus;
