The rubber nozzle is all cracked.

那只橡胶全裂了。

It is shown that test aerospike nozzle has good altitude compensability of thrust.

实验表明，塞具有良好高度补偿能力和较高效率。

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.

以某型号发动机尾部点火设究对象,对点火序列设、点火药量估算、堵片设方法进行了阐述。