The $media->children() method in conjunction with the yt: namespace returns this node as a SimpleXML object, and the object's attributes() method retrieves the value of the seconds attribute.
$media->children()方法联合yt:名称空间以SimpleXML对象的形式返回这个节点，该对象的attributes() 方法检索seconds属性的值。
Objective: to establish NK cell receptor NKG2D eukaryotic expression vector and investigate on the cytotoxicity of NK cell line-YT transfected with NKG2D.
目的建立NK细胞受体nkg2d真核表达载体，通过转染NK细胞系yt，初步探讨NKG2D分子对YT细胞系杀伤功能的增强作用。
The option of sintering way had notable influence on the chemical composition of Mo-Yt alloy.
烧结方式对钼钇合金坯料化学成分具有显著的影响。
Jia YT, Wei L. Subgenomic replicon model of hepatitis C virus and its application. Chin J Hepatol, 2005,13:158-160.
贾因棠，魏来。丙型肝炎病毒非结构基因复制子模型的建立和应用。中华肝脏病杂志，2005， 13：158-160。
Through analyzing the present operation situation of the YT governor, the main problems existing in its operational process are pointed out.
通过对YT型调速器运行现状的分析，指出了其运行过程中存在的主要问题。
Through analyzing the present operation situation of the YT governor, the main problems existing in its operational process are pointed out.
通过对YT型调速器运行现状的分析，指出了其运行过程中存在的主要问题。
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