In 1937 he was seconded to the Royal Canadian air Force in Ottawa as air armament adviser.

1937年他被临时调往渥太华的加拿大皇家空军担任军备顾问。

youdao

In 1937 he was seconded to the Royal Canadian air Force in Ottawa as air armament adviser.

1937年他被临时调往渥太华的加拿大皇家空军担任军备顾问。

youdao