The paper describes the new pressurization system for the upper stage of launch vehicles and spacecraft and the flight test results of the vehicle which conform to the design of the system.
ⅠKeeping step with the economic re-structuring and the policy of opening tothe outside world,marked progress hasbeen made in China’s urban constructionand great strides have been taken in cityplanning during the ten...ⅠKeeping step with the economic re-structuring and the policy of opening tothe outside world,marked progress hasbeen made in China’s urban constructionand great strides have been taken in cityplanning during the ten years and more re-cently.This is manifested in the following5 respects.A.Thanks to the展开更多
文摘The paper describes the new pressurization system for the upper stage of launch vehicles and spacecraft and the flight test results of the vehicle which conform to the design of the system.
文摘ⅠKeeping step with the economic re-structuring and the policy of opening tothe outside world,marked progress hasbeen made in China’s urban constructionand great strides have been taken in cityplanning during the ten years and more re-cently.This is manifested in the following5 respects.A.Thanks to the
