But we'll go over that, particularly some exceptions, when we're filling in electron configurations, and how we would go about doing that for positive ions, which follow a little bit of a different procedure.

但是我们将会重温它们，特别是一个特例，当我们填充一个电子构型，而且我们会如何着手,处理阳离子，它遵从一些别的不同的过程。

麻省理工公开课 - 化学原理课程节选

But early studies reporting positive results for the vertebroplasty procedure did not have control groups, making it unclear whether the purported benefits were simply due to the placebo effect or the natural tendency of chronic pain to subside over time.

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The pressure of the market forced providers to innovate better, more cost-effective ways to do the procedure while maintaining a positive, safe patient experience.

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Dr. FREEDEN: Once that test came back positive, we would actually enhance the procedure so that we would try to ensure that we do everything possible to encourage that person to get into care.

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