Ok, select one of the box and then go to the Reactor panel click on Open Property Editor.

好，选择其中一个方体和到反应堆面板点击打开特征编辑器。

youdao

To modify the property, open the element in the editor and update from there, because all of the properties in the property browser are read-only.

因为属性浏览器中的所有属性都是只读的，因此要修改属性，必须在编辑器中打开元素并从那里进行更新。

youdao

For an explanation of each parameter, click the? Icon in the property editor to open up the online help for this topic.

如果想获得每个参量的详细解释，点击属性栏上的？问号图标就可获得在线帮助。

youdao