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。
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。
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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