upgradevt.升级;提高;改善adv.向上地n.升级;上坡
upgrade reconstruct升级改造
upgrade installation升级安装
upgrade and transform升级改造
upgrade of industrial产业结构升级
upgrade-modification升等改造
Upgrade Pilot Training飞行员升级训练
Upgrade emplacement.升级炮位。
upgrade competitiveness提高竞争力
Upgrade and improvement升级改造
upgrade and reconstruct升级改造