与"direct variation"相近的词条

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• direct transhepatic catheter obliteration
• direct transmission
• direct trauma
• direct V-A accessory connection
• direct vaporization GC
• direct variation
• direct venography
• direct view irradiation
• direct-viewing
• direct-viewing memory tube
• direct-viewing storage tube
• direct viewing type ultrasonic thickness gauge
• direct violence
• direct violet
• direct viral fluorescent-antibody identification
• direct virology

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