The rubber nozzle is all cracked.

那只橡胶喷管全裂了。

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

实验表明，塞式喷管有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计为研究对象,对序列计、药量估算、喷管堵片计方法进行了阐述。