NPP is a risk reduction mission for NPOESS, and will be the first major element of the next generation U.S. Earth observation system when it is launched in 2010.

NPP是NPOESS的风险降低任务，将成为2010年发射的下一代美国地球观测系统的首个主要组成部分。

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It was found that these three compounds can induce the differentiation of HL-60 cells in vitro, judged by cell growth inhibition, morphologic observation and NBT reduction ability.

结果表明，在适当的用药浓度下，从细胞生长抑制情况、形态学观察及NBT还原能力测定判断，三种药物对HL - 60细胞有明显的诱导分化作用。

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In this paper, the observation principle and data reduction method of HIPPARCOS are described.

本文主要描述依巴谷卫星的光学观测原理，资料处理方法。

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