目前，等比例模型的高速风洞测试正在进行中，预计混合机翼能在2020年前起飞。

With high-speed wind tests of scale models under way, the blended wing could take flight before 2020.

youdao

目前，等比例模型的高速风洞测试正在进行中，预计混合机翼能在2020年前起飞。

With high-speed wind tests of scale models under way, the blended wing could take flight before 2020.

youdao