Nebs助记

The NEBs are sodium-rich but potassium-poor, and differ from the vast majority of normal arc basalts in their higher Nb/ La ratios and minor negative to positive anomalies in Ba, Nb and Ti.

富Nb玄武质岩富钠贫钾，具有微弱负-正Ba、Nb和Ti异常以及高的Nb/La比值，不同于大多数正常岛弧玄武岩。

In order to increase the coverage rate of NEBs to the event region, the external event point ( EP) was introduced and the calculation method of the EP was also discussed in detail.

为了增加对事件边界的覆盖率，EBTAC算法引入了事件外边界点（EP）并给出了其计算方法。

NEBS certification is required by most of the telecommunications carriers in America, and becomes the passport for telecommunication equipments for which want to entry the American market.

NEBS认证普遍被美国电信运营商所要求，客观上是电信设备进入美国市场的通行证。该认证从安全、电磁兼容和环境可靠性等方面对电信设备提出了严格要求。