轴对称喷管 meaning in English

axially symmetrical nozzle
axisymmetric nozzle

The infrared radiation characteristics of axisymmetric and 2 - d nozzles with aspect ratios of 1 , 4 , 8 , 12 and 16 , have been experimentally studied
摘要对轴对称喷管和一组长宽比分别为1 ， 4 ， 8 ， 12和16的二元喷管进行了红外辐射特性测试实验研究。
The spatial distributions of the infrared radiation intensity of 2 - d nozzles have been obtained , and compared with that of the axially symmetric nozzles
得出了二元喷管的红外辐射强度的空间分布，并且将二元喷管和轴对称喷管的红外辐射强度进行了比较。