Are standard codes used in source fields, such as user department or location codes?

源字段中是否使用标准代码，如用户部门或位置代码？

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This allows you to take data from two different source fields and merge them into a single target field.

这允许您从两个不同的源字段获取数据并将它们合并到一个目标字段中。

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To keep the Yellow river from flow cutoff is the necessary condition for allowing its riverside source fields alive.

保持黄河不断流是傍河水源地存在的必要条件，黄河频繁的断流威胁傍河开采水源地的稳定性。

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Solar experts believe that the tachocline may be the source of powerful magnetic fields that produce strong solar flares and solar winds, and create sunspots that mysteriously appear and disappear during an 11-year cycle.

BBC: Sun has strange 'spin cycle'

If you're looking for more technical details you'll find a link to the recently published paper titled, Dexterous manipulation of microparticles using Bessel-function acoustic pressure fields at the source.

ENGADGET

The Initiative, a 10-year plan to provide greater work-related flexibility to women and men in research careers, is run by the National Science Foundation (NSF), which is the leading source of Federal grants for many fields that are crucial to US technology development and job creation, including computer science, mathematics, and the social sciences.

WHITEHOUSE: First Lady Michelle Obama at the National Science Foundation Family-Friendly Policy Rollout | The White House