Methods: The retentive force of 10 samples of modified RPI clasps was measured on a human mandible with intact teeth of 7+7 with a multi functional tester(Instron Co.USA).是什么意思_Methods: The retentive force of 10 samples of modified RPI clasps was measured on a human mandible with intact teeth of 7+7 with a multi functional tester(Instron Co.USA).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句