来自pole,地级，两级，-ity,名词后缀。

1. the growing polarity between the left and right wings of the party

党内左右两派间日益明显的对立

2. Polarity is inherent in a magnet.

极性是磁铁的固有性质.

3. There are miscellaneous tools, pliers , putty knife, polarity stamps, battery stamping or coding equipment, lead cutters.

有各种工具 、 手钳 、 油灰刀, 极性印戮 、 电他标记打印或编号机 、 铅切刀.

4. The polarity of the ends of the open - circuit conductor may then be deduced.

这样就可以断定开路导体两端的极性.

5. It is not possible to try to salvage or change the polarity correctly by charging.

试图补救或通过充电的方法把极性改过来是不可能的.