主低温级
/ˈmeɪn kɹˌaɪəʊdʒˈɛnɪk ˈsteɪdʒ/
n
English: main cryogenic stage · 主低温级
English · main cryogenic stageEspañol · etapa principal criogénicaFrançais · étage principal cryotechnique
释义：Central body that ensures propulsion after the solid booster stage separates.