The applications of nuclear techniques make archaeology gradually become a subject with quantitative expressions.

核技术的应用从根本上改变了考古学的面貌，使之逐渐成为定量表达的科学。

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Environmental isotope and nuclear techniques provide unmatched insights into the processes governing the water cycle and its variability under past and present climates.

环境同位素和核技术提供无敌的对在过去和现下气候区下管理水循环和它的变化性的过程了解。

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Because ultrasound does not use ionizing radiation, unlike radiography, CT scans, and nuclear medicine imaging techniques, it is generally considered safer.

超声由于不使用电离辐射，与摄片，CT扫描和核医学成像技术，它通常被认为更安全。

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Under the moratorium, our laboratories have maintained our arsenal through the Stockpile Stewardship Program without underground nuclear testing, using techniques that are as successful as they are cutting edge.

WHITEHOUSE: VP Biden: The Path to Nuclear Security

Since 1992, in the place of testing, the United States has relied for "stockpile stewardship" on a host of computer-modeling, other simulation techniques and non-nuclear explosive tests that have provided insights into the performance of an aging arsenal.

CENTERFORSECURITYPOLICY: Are we serious about deterrence?

Conflict resolution didn't exist as a field when Dr. Spock reigned, but a generation of scholars has introduced new techniques to resolve showdowns, from nuclear-arms pacts to general strikes.

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