名词
中文翻译：Unknown
同义词：
['pH reflux test', 'pH reflux test', 'pH reflux test']
例句：
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1. ThepH reflux test is used to diagnose acid reflux disease.
pH返流试验用于诊断胃酸反流病。
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2.During the pH reflux test, the patient must lie flat on their back.
在pH返流试验期间，患者必须平躺在背上。
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3. The pH reflux test is a crucial step in the treatment of gastroesophageal reflux disease.
pH返流试验是治疗胃食管反流病的关键步骤。