【摘 要】
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The history of LM-4B traces back to the end of the 1970s. The feasibility study of LM-4 began in 1982 and the engineering development was initiated in the follo
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The history of LM-4B traces back to the end of the 1970s. The feasibility study of LM-4 began in 1982 and the engineering development was initiated in the following year.Initially, the LM-4 served as a back-up launch vehicle for LM-3 to launch China's
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