The statement said a Sukhoi Su-34 aircraft had accidentally discharged aviation ammunition.

声明说，一架苏霍伊苏-34飞机意外地发射了航空弹药。

The aircraft is a vastly upgraded version of the Sukhoi Su-27, which makes-up most of Russia’s 3,547 fleet.

这架飞机是苏霍伊 Su-27 的大幅升级版， 后者构成了俄罗斯 3,547 架飞机的大部分。

Russia has 3,100 aircrafts, including its deadly multi-role fighter the Sukhoi Su-35, as well as its interceptor, the MiG-31.

俄罗斯拥有 3, 100 架飞机， 包括致命的多用途战斗机 Sukhoi Su-35 以及拦截机 MiG- 31。

As for ground attack, Iran has about 50 Russian-made planes in the Sukhoi SU range, the Su-22, 24 and 25.

至于对地攻击， 伊朗在苏霍伊 SU 系列中拥有大约 50 架俄制飞机，即 Su-22、24 和 25。