常見例句雙語例句Methods To adopt screw expansion appliance to gradually expand posterior and anterior dental arch with 18~33 day activation and 3~6 month retainment.方法採(cǎi)用螺鏇擴(kuò)大矯治器進(jìn)行前牙和後牙的擴(kuò)弓，加力18～33天，戴用保持器3～6個(gè)月。 返回 anterior expansion arch