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苏联已对它的四种新型的第五代洲际弹道导弹进行飞行前的准备实验。其中两种是固体燃料导弹,一种是大型的机动武器系统,它与美国空军MX先进的洲际弹道导弹的尺寸相当。 上周美国情报官员说,除了SS-17、SS-18和SS-19的洲际弹道导弹以外,新一代的洲际导弹正在进行地面测试检查,为飞行试验做好准备。他们认为这些固体燃料导弹是“极其准确的”,他们补充说,在新一代弹道导弹中所用的制导技术部分已经应用到SS-18中的一种上,称四型（改型）。这个型号携带十个再人弹头,每个当量为50万吨,射程10000公里（6210哩）,圆概率误差（CEP）精度0.14（氵里）。
The Soviet Union has conducted pre-flight preparations for its four new fifth-generation intercontinental ballistic missiles. Two of these are solid-fuel missiles and one is a large mobile weapon system that is comparable in size to the USAF MX’s advanced ICBMs. Last week, U.S. intelligence officials said that in addition to the intercontinental ballistic missiles SS-17, SS-18 and SS-19, a new generation of intercontinental missiles is undergoing ground-based testing to prepare for flight tests. They consider these solid-fuel missiles to be “extremely accurate,” adding that some of the guidance techniques used in the new generation of ballistic missiles have been applied to one of the SS-18s, called Type Four (modified). This model carries ten re-entry warheads, each with an equivalent weight of 500,000 tons, a range of 10,000 kilometers (6210 miles), and a Cepic error of 0.14 (miles).