A large amount of amorce was needed.

需要大量的起爆剂。

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.

以某型号发动机尾设计研究,序列设计、药量的估算、喷管堵片的设计方法进行了阐述。