EAN

EAN

1. ■ =Effective Atomic Number 有效原子序数;

2. ■ Electronics Aid to Navigation电子导航设备;

3. ■ Equivalent Atomic Number 当量原子序数;

4. ■ Expenditure Account Number 经费帐号;

5. ■ Experimental Allergic Neuritis 实验过敏性神经炎;

6. ■ External Access Network 外部存取网络