The factors cause to project period alteration include invest cycle change and technical risk etc. mainly.

导致折现期变动的因素主要包括投资周期变动和技术风险等。

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OBJECTIVE: To research the cell cycle change and cell surviving of the tumor cell undergone hypoxic and radiated condition.

目的：研究肿瘤细胞在缺氧及放射情况下细胞周期的改变及细胞存活的情况。

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Objective To explore the mechanism of cell proliferation cycle change of human embryonic pulmonary fibroblasts (HEPF) induced by crocidolite.

目的探讨青石棉致人胚肺成纤维细胞(HEPF)增殖的细胞周期变化的机制。

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Skeptics say global warming is part of a natural cycle of climate change.

VOA: standard.2009.12.09

It is a life cycle change in the population group.

FORBES: India Likely To Replace Japan As World's Third Largest Economy

The only way to stop the cycle is to change behaviors, one woman at a time.

FORBES: The Psychological Warfare of Women: Are We Our Own Worst Enemy?

In order to signal a genuine turn in the cycle the indices must change direction in a way that is pronounced in size, pervasive across individual components and persistent.

ECONOMIST: Leading economic indicators