One of these designs has a pair of jet engines mounted aft, but positioned over and above the wing. This aircraft has no tail fins at all (see below).

其中一个设计方案有一对安装在尾部、在机翼上方的发动机，而根本没有尾翼（见下图）。

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The ban made sense for the Yugoslav war, as virtually all the fixed-wing military aircraft in the region were under the control of one side — the Bosnian Serbs.

这种禁止在南斯拉夫战争中显示出它的意义，因为当时实际上所有在该地区里的固定机翼军放飞机都被一方控制了—波斯尼亚塞尔维亚人。

youdao

All this is difficult for aircraft-makers, who are used to being able to hang competing engines off the same wing.

所有的这些都是给飞机制造商的难题，他们往往习惯于决定在同样的机型上加载竞争型号的发动机。

youdao

Apart from its uniqueness, Concorde is seen as a pace-setter because all other attempts to design such aircraft have relied on its delta wing design.

ECONOMIST: Supersonics on the back burner | The

The office is also in charge of the White House Communications Agency, which handles all presidential telephone, radio, and digital communications, as well as airlift operations through both fixed-wing and helicopter aircraft.

CENTERFORSECURITYPOLICY: Center For Security Policy

All this is difficult for aircraft-makers, who are used to being able to hang competing engines off the same wing.

ECONOMIST: Monitor