名词
中文翻译：脉搏描记器
同义词：
['manometer', 'sphygmograph']
例句：
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1. The doctor used a plethysmograph to measure her blood pressure.
医生使用脉搏描记器测量了她的血压。
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2. The plethysmograph was used to monitor the patient's heart rate during surgery.
脉搏描记器被用来监测病人在手术期间的心率。
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3. The plethysmograph was used to record the patient's blood pressure before and after treatment.
脉搏描记器被用来记录病人在治疗前后的血压。