They use database-generated primary key values for the ID attribute.
它们为ID属性使用数据库生成的主键值。
During calibration, both primary and secondary values can be displayed at the same time.
校验时，可同时显示一次值及二次值。
During calibration, both primary and secondary values can be displayed at the same time.
校验时，可同时显示一次值及二次值。
应用推荐