combination？
combination locks 暗码锁 字码锁；金库门锁例句筛选1.Standard Terminology Relating to Combination Locks与组合锁相关的术语 2.To improve concurrency, DB2 and IDS use a combination of locks and isolationlevels.为改善并发性，DB2和IDS结合使用了锁和隔离级别。
