Backup and Restoration of the System Software for VG - Quattro MS - MS System .

VG -Quattro 四极质谱系统软件的备份及恢复.

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CTD was introduced to observe subendocardial myocardial VG at baseline , during ischemia and with DOB infusion.

以CTD观察心内膜下心肌缺血及应用DOB后心内膜下心肌的VG变化.

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In China, VG is still and it needs more practices to develop.

在我国, 风险担保还处于初级阶段,需要实践中不断探索.

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