Perchlorate was separated with high capacity and hydroxide selective column using generating on - line from EGC.

建立了一种测定痕量高氯酸盐的离子色谱 - 质谱联用方法.

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Methods: The data of 161 EGC patients, diagnosed from Jul .1979 to Aug.2004, were investigated in the study retrospectively.

方法 回顾 分析1979年7月至2004年8月间收治的161例早期胃癌患者的临床资料.

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EGC system is element of INMARSAT - C system and it includes net service and fleet net service.

增强性群呼是INMARSAT -C 系统的组成部分之一,它包括安全网和船队网.

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