n.

1. 同等；類似；相同
2. （兩個敵對國家的）勢均力敵
3. 【商】平價
4. 【物】宇稱性

n.

1. equality or equivalence, especially as regards status, pay, or value.
2. Mathematics  the fact of being an even or an odd number.
3. Physics  the property of a spatial wave equation that either remains the same or changes sign under a given transformation.

n.

[名]

1. ①平價；比價。
2. ②奇偶性。