English translation for "research and development flying"

研究与实验飞行

Similar Words：

"research and development expenditure" English translation, "research and development expenditures" English translation, "research and development expense" English translation, "research and development expenses" English translation, "research and development facility" English translation, "research and development function" English translation, "research and development institute" English translation, "research and development investment" English translation, "research and development management" English translation, "research and development manager" English translation