英语单词“sustainer”的翻译、意思、用法、释义-英汉词典

单词	sustainer
释义	sustainer[sə'steinə]n.1.■支持者；支撑物2.■保持者(或物)；持续者(或物)；维持者(或物)3.■【火箭学】4.■(多级火箭或导弹的)主级；任何一级5.■主级(或任何一级的)发动机(组)6.■=sustaining program
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