Results show that the linear expansion coefficients of D1 has large difference with that of single-basepropellant.
结果表明，D1和单基药的热膨胀系数有较大的差异，中止燃烧破孔率常温小于低温。
2
The manufacturing technology of seismic charge with high detonation velocity containing singlebasepropellant and double base propellant is researched.
研制含单基药、双基药的高爆速震源药柱+，并对其制造工艺进行了研究。
3
Contrast with singlebase gun propellant with polymer coating layer, the two-layered variable-burning rate propellant has good properties of progressive combustion and low temperature coefficient.