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Patient-controlled analgesia.
Principal component (or components) analysis.
1980s; earliest use found in Annals of Surgery1960s; earliest use found in Biometrics.
1980s; earliest use found in Annals of Surgery<br>1960s; earliest use found in Biometrics.
雅致网英汉双解词典包含236457条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。