道格拉斯B-18 Bolo——照片和视频

这 道格拉斯B-18波罗 is an American medium bomber which served with the United States Army Air Corps and the Royal Canadian Air Force (as the Digby) during the late 1930s and early 1940s. The Bolo was built by the Douglas Aircraft Company, based on its DC-2, and was developed to replace the Martin B-10. By 1940, it was considered to be underpowered, to have inadequate defensive armament, and to carry too small a bomb load. Many were destroyed during the attacks on Pearl Harbor and the Philippines in December 1941.

源： 道格拉斯B-18波洛在维基百科上的内容

这 道格拉斯B-18波罗 是 1930 年代为美国陆军航空队开发的中型轰炸机。它基于 DC-2 商用客机，旨在取代马丁 B-10 成为空军的标准轰炸机。然而，它很快就被更先进的波音 B-17 飞行堡垒和联合 B-24 解放者所掩盖，后者具有更大的速度、航程和有效载荷能力。B-18 在二战期间主要用于沿海巡逻和反潜战，以及训练和运输任务。共制造了 350 架 B-18，其中 122 架被改装成 B-18A 变体，具有更强大的发动机和改进的防御武器。B-18 还出口到巴西、加拿大和多米尼加共和国。