其中一个是JSpinner，它使用户能够方便地选择日期、数字或拾取列表中的选项。
One of them, JSpinner, allows a user to easily select a date, number, or choice from a pick list.
要重复的是，戴维森盘是根据关系中两人的出生日期，时间，地点取中点而做出来的。
To repeat, the Davison chart is made from by taking the midpoints of the birth dates, birth times, and birthplaces of the two people involved in the relationship.
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