名词
中文翻译：封闭管法
同义词：
['closed-loop method', 'closed-system method']
例句：
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1. Theclosed-tube method is a technique used in the analysis of chemical reactions.
封闭管法是一种用于分析化学反应的技术。
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2.In the closed-tube method, the reactants are placed inside a sealed tube and then heated to initiate the reaction.
在封闭管法中，反应物被放置在密封的管内，然后加热以引发反应。
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3. The closed-tube method has been shown to be more accurate than other analytical techniques.
封闭管法已被证明比其他分析技术更准确。