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

实验表明，管具有良好的高度补偿能力和较高的效率。

The rubber nozzle is all cracked.

那只橡胶管裂了。

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为研究对象,对点火序、点火药量的估算、管堵片的方法进行了阐述。