1. a connection between an electrical device and the earth (which is a zero voltage). 
   连结电装置和土地（零伏）的连结物。
2. an arrangement of coils used in sensitive electrical instruments; the coils are arranged to give zero resultant external magnetic field when a current passes through them and to have zero electromotive force induced in them by an external magnetic field. 
   在灵敏电器中使用的线圈排列。
3. electrical measurement of non-electrical quantities 
   非电量的电测量
4. Not equal to zero. 
   非零的不等于零的
5. Today I accomplished zero. 
   今天我一事无成

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