短語詞組短語tissue e retractor 組織牽開器third molar tissue retractor 第三磨牙組織牽開器;第三磨牙組織牽開器英語double prongs tissue retractor 雙爪牽開器soft tissue retractor 軟組織牽開器third d molar tissue retractor 第三磨牙組織牽開器self -retaining tissue retractor 傷口牽開器 返回 tissue retractor