exterior coating短语¹⁴⁴⁹⁷²⁺² 基本例句 表面涂层 Kusovac said insight into this critical technology, and particularly the plane's secret radiation- absorbent exterior coating, would have significantly enhanced China's stealth know-how. Kusovac说由于获悉了关键技术，尤其是吸收雷达波飞机表层的技术，很大程度上增强了中国的技术能力。 yeeyan