A method to calculate the dry mass of single-stage vehicle is proposed in this paper.
提出了单级入轨运载器干质量计算方法。
The results show that the two-stage process is better than the single-stage.
结果表明：二级生物催化氧化反应工艺比单级氧化反应工艺效果好。
The results show that the two-stage process is better than the single-stage.
结果表明：二级生物催化氧化反应工艺比单级氧化反应工艺效果好。
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