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As the Russian Empire the nation first competed at the 1900 Games and returned again in 1908 and 1912After the Russian revolution in 1917 and the subsequent establishment of the Soviet Union in 1922 it would be thirty years. Russia officially known as the Russian Federation has competed at the modern Olympic Games on many occasions but as different nations in its history. 收藏到防空洞 Specific Impulse ISP ISP indicates how efficient the rocket engine is. . The best way to think about specific impulse is to imagine an engine with 1 kg of propellant. It is measured in seconds and the higher it is the better. 此條目需要补充更多来源 2020年1月15日请协助補充多方面可靠来源以改善这篇条目无法查证的内容可能會因為异议提出而移除 致使用者请搜索一下条目的标题来源搜索 以检查网络上是否存在该主题的更多可靠来源判定指引. We would like to show you a description here but the site wont allow us. Presidents Term years Konstantin Andrianov.