Generally,air combat is broken into three regions: beyond visual range(BVR),within visual range(WVR),and close-in air combat(CIAC).是什么意思_Generally,air combat is broken into three regions: beyond visual range(BVR),within visual range(WVR),and close-in air combat(CIAC).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句