二维收缩-扩张喷管
Keywordtwo-dimensional convergent-divergent nozzle
喷嘴扩散面积比
nozzle expansion area ratio
缩张喷嘴
convergent-divergent nozzle
多喷嘴喷气织机
pneumatic multi-jet weaving machine
喷嘴喷雾图形检验
nozzle spray pattern check
容许的喷嘴喷射
permissible nozzle projection
（几乎）优越扩张
almost excellent extension
(强几乎)优越扩张
strongly) excellent extension