1.A large amount of amorce was needed.

1.需要大量的起爆剂。

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.以某型号发部设计研究对象,对列设计、药量的估算、喷管堵片的设计方法进行了阐述。