1.A large amount of amorce was needed.

1.需量的起爆剂。

2.Taking aft-end igniter design for a rocket motor for example,design methods for ignition sequence,amorce quantity estimation and nozzle closure were described respectively.

2.以某型号发动机尾部点火设计研究对象,对点火序列设计、点火药量的估算、片的设计方法进行了阐述。