Inner-tailpipe nozzle, which cast by investment casting with superalloy K487, is one of the key components of the spaceflight engine.是什么意思_Inner-tailpipe nozzle, which cast by investment casting with superalloy K487, is one of the key components of the spaceflight engine.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句