这个星型体系结构由中心的源存储库和工作于这个存储库的多个开发人员组成(参见图1)。

This star architecture is illustrated as a central source repository with multiple developers working around it (see Figure 1).

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很多老的星表和参考源使用的是一个更早一点的标准历元，这个较早的历元按照贝塞尔年的开始-1950年建立起来的。

Many older catalogs and reference sources use an older standard epoch based on the start of the Besselian year 1950 - this epoch is called "B1950.0".

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周启星， 梁仁禄，王新采用盆栽实验的方法研究了土壤外源汞对大豆幼苗生长发育的影响。

Pot experiment studies were conducted on soil treated with mercury to probe the effectiveness of the heavy metal on soybean seeding growth.

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