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。
How to set primary key with duplicate values based on main primary key?
如何基于主密钥重复值，主键设置？
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。
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