名词
中文翻译：持留方法
同义词：
['holding technique', 'holding procedure']
例句：
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1.The holding method used in this experiment is crucial for the results.
在这个实验中使用的持留方法是结果的关键。
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2. The holding method was designed to prevent contamination during the process.
持留方法被设计来防止在过程中的污染。
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3. The holding method has been refined over time to improve efficiency.
持留方法已经经过改进，以提高效率。