... 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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部分的底部的钟形喷管 engine bell
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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;
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.
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