The Pbisotope display single stage evolution in the mantle;
研究区的地幔铅具有单阶段演化历史；
Tauruss love horoscope is proposed: single Taurus even to a mature stage will seriously mate.
金牛的爱情占星有提：单身金牛们甚至到了一熟龄阶段也会慎重择偶。
Being single is a stage of life.
单身，是生活的一个阶段。
The S-IVB stage has its single engine gimbaled in pitch and yaw.
IVB级有一个单独摆动发动机来作俯仰和偏航。
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 article presents new steelmaking technology of two stage and single bath.
介绍了双级单熔池炼钢新工艺。
Product Notes: single-stage regulator valve for the high pot.
产品备注：为单段调节气阀高速锅。
Product Notes: single-stage regulator valve for the high pot.
产品备注：为单段调节气阀高速锅。
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