gingival incising knifegingival knifegingivectomegingivectomy knifegum lancet牙龈: gingiva; gum; ule-; ulo-切除: excision; resection; absciss ...刀: knife; sword龈切除刀: scalpel for gingivectomy牙龈切除钳: gum guillotine forceps; gum lancet下载手机词典可随时随地查词查翻译