与"first time derivative"相近的词条

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• first thoracic spiracle
• first thoracic vertebra
• first thoracic vertebra process
• first thoracic veterbral process
• first-time
• first time derivative
• first toe
• first transit study
• first transition series
• first transmission cell
• first trial
• first trimestedr of pregnancy
• first trimester
• first trimester abortion
• first-trimester drug use
• first trimester of pregnancy

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