New modifications on the B-52 also include a laser designator for precise delivery of laser-guided munitions and a laser rangefinder for exact target coordinates.是什么意思_New modifications on the B-52 also include a laser designator for precise delivery of laser-guided munitions and a laser rangefinder for exact target coordinates.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句