root opening

基本解释

C-shaped canal, multiple opening and multiple foramen root canal were found…
③在融合根中，均出现一定数量的C形根管和多口、多孔类根管。
Root opening---The separation between the members to be joined at the root of the joint.
根部间隙---在接头根部被接焊件之间的分离量。
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When phone book entries are displayed, before the loop begins, the script sends the XML and DOCTYPE information, followed by the opening of the root element and element.
当电话簿条目被显示时，在循环开始之前，脚本发送 XML 和 DOCTYPE 信息，然后是根元素和元素的开始标记。

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