... liquid hydrogen container 液氢容器 liquid hydrogen loop 液氢环路 target， liquid hydrogen 液态氢靶 ...
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The world's first closed-loop engine, with thrust of about 7 tons and using liquid oxygen and carbon-hydrogen propellant, was installed in booster L.
世界上第一台可提供7吨推力的闭合回路液氧碳氢推进剂发动机被安装到L助推器上。
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