A large amount of amorce was needed.

需要大的起。

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.

某型号发动机尾部点设计研究对象,对点序列设计、点的估算、喷管堵片的设计方法进行了阐述。