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将由萨克拉门托的航空喷气固体发动机公司为美国空军发展的四脉冲固体火箭发动机,能给高级空中发射的导弹提供各种推力剖面图。一位空军发言人说,对于一个有攻击和防御能力的导弹来说,由改变推力剖面图提供的灵活性将有许多优点。
The four-pulse solid rocket engine to be developed by the U.S. Air Force by Jet Propulsion Solid-State Engine Company of Sacramento offers a variety of thrust profiles for advanced airborne missiles. An Air Force spokesman said there are many advantages to flexibility provided by changing the thrust profile for an attacking and defensive missile.