A cascade of genes orchestrate a series of events leading to formation of blood vessels in an embryo.

级联的基因控制的一系列的事件参与了胚胎中血管的形成。

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In addition, salt water reduction environment advantageous to the formation of fluorene series and sulfur fluories compounds is also advantageous to the preservation of naphthalene series compounds.

此外，有利于形成芴系和硫芴系列化合物的咸水还原环境，同样也有利于萘系化合物的保存。

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Two different phases of hydrocarbon inclusions have been identified according to the formation time series of the host diagenetic minerals.

根据油气包裹体寄主成岩矿物的形成时间序列，识别出两期油气包裹体。

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While union power dwindled during the 1990s with declining membership, the formation of "superunions" through a series of recent mergers has created organisations with huge industrial clout.

BBC: Union revival 'risks industrial peace'

During the dance, partners move through a series of passes and turns in a star formation, pivoting around each other before meeting in the centre for a final bow.

BBC: Stepping into Salta��s folklore culture

The company bought the CDMA business from China Unicom, and a series of acquisitions between 2003 and 2008 led to the formation of the company as we know today.

FORBES: China Telecom Has Room To Run Up To $68