A multilevel model was used that took account of the nesting structure of articles within journals.
一种多级模式被用于说明文章在杂志中的巢式结构。
To safeguard patient privacy, the PODS design USES a multilevel security model.
为了保护患者隐私，PODS的设计采用一个多级安全模型。
Using the technology O-O, a multilevel inherited product model based numeralization is presented.
在此基础上，利用面向对象技术，给出了多级继承的数字化产品模型。
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