... beginning of injection 喷油始点 bell nozzle 钟形喷管 binary vapour-engine 双元蒸汽发动机 ...
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以上来源于: WordNet
The dual-bell nozzle has an inflection point (12) between the first stage nozzle and the second stage nozzle.
双钟形喷嘴具有位于第一级喷嘴和第二级喷嘴之间的拐点 （12）。
When numbers of the inner nozzle are enough, plug nozzle has less size, less weight and higher thrust efficiency than the bell nozzle under same area ratio.
在单元数足够多时，环簇式塞式喷管可比相同面积比的钟形喷管的尺寸更小，重量更轻，推力效率更高；
By employing the gaseous oxygen as oxidizer and gaseous hydrogen as fuel, hot-firing tests were performed for aerospike nozzle and dual-bell nozzle test engines with altitude compensating features.
采用气氧作氧化剂、气氢作燃料，对具有高度补偿特性的塞式喷管和双钟型喷管进行了点火热试。
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