retro-rocketry

"retro-rocketry" Chinese translation ("retro-rocketry" in Chinese, "retro-rocketry" 中文翻译, "retro-rocketry"发音):

retro-rocketry n. 制动火箭学; 反向火箭学 [n. 制动火箭学; 反向火箭学 ]