This presents an aiming mark, usually a ring with a central dot on the reflector screen, giving the gunner a clear view of the target with the graticule pattern superimposed on it.是什么意思_This presents an aiming mark, usually a ring with a central dot on the reflector screen, giving the gunner a clear view of the target with the graticule pattern superimposed on it.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句