The first few lines retrieve the values from the drop-down list boxes in which the user selects usage and configuration, respectively.
前面几行代码分别从用户选择用法和配方的下拉列表框获取值。
A simple search form (see Figure 1) contains a required text field, two check boxes, and a drop-down list.
一个简单的搜索表单(参见图1)包含一个必填的文本字段、两个复选框和一个下拉列表。
The new way is a bit more complex, but the result is that you get a nice aggregation in the drop-down list of the Aggregation widget, with nice text boxes for the parameters and expressions.
新的方式更加复杂，但可以在Aggregation Widgets 下拉列表中得到一个不错的聚合，还为参数和表达式提供了漂亮的文本框。
The new way is a bit more complex, but the result is that you get a nice aggregation in the drop-down list of the Aggregation widget, with nice text boxes for the parameters and expressions.
新的方式更加复杂，但可以在Aggregation Widgets 下拉列表中得到一个不错的聚合，还为参数和表达式提供了漂亮的文本框。
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