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This paper presents the evolution of the launch service project.
本文介绍了该项目的进展情况。
youdao
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This paper focuses on the advance in study on launch safety for gun propellant charge.
介绍了发射装药发射安全性研究进展。
youdao
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This paper focuses on the advance in study on launch safety for gun propellant charge.
介绍了发射装药发射安全性研究进展。
youdao