passive self-ligating brackets
...被动自锁托槽；正畸治疗 [gap=1092]Key words] External apical root resorption; Active self-ligating bracket; Passive self-ligating brackets; Orthodontic treatment ..
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passive self-ligating brackets
被动自锁支架
以上为机器翻译结果，长、整句建议使用 人工翻译 。