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关注：1
2013-05-23 12:21
求翻译：The ejector nozzle used was a thrustoptimized parabolic nozzle (Md 3.2, NPR for full expansion 49.5) and supplied with an additional nitrogen feed line with an independent pressure regulating valve.是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
The ejector nozzle used was a thrustoptimized parabolic nozzle (Md 3.2, NPR for full expansion 49.5) and supplied with an additional nitrogen feed line with an independent pressure regulating valve.
问题补充： |
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