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通过对硝化棉球形药进行粒度级配，发现以某种级配方式进行粒度级配后制成推进剂可提高低压段（７～１５ＭＰａ）推进剂的燃速，从而有利于降低ＲＤＸ－ＣＭＤＢ推进剂的燃速压强指数。
By particle size grading of the nitrocellulose spherical drug, it was found that the grading of the propellant in a graded manner can improve the burning rate of the propellant in the low pressure section (7-15MPa), which is beneficial to reduce the RDX-CMDB propulsion The burning rate of pressure index.