美国国家标准与技术研究院（National Institute of Standards and Technology，NIST）直属美国商务部， 从事物理、生物和工程方面的基础和应用研究， 以及测量技术和测试方法方面的研究，提供标准、标准参考数据及有关服务，在国际上享有很高的声誉。 NIST主要标准品 ...

American Standard Cos says it will buy back as much as $300 million of its stock because it thinks shares are undervalued (S) By Bloomberg News American Standard Companies, Piscataway, NJ, following ...

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Unlike some printers that rely on liquid ink when generating documents, laser printers use a powdery substance known as "toner" that sets into place when heat is applied. This material is stored ...

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